# 10 Best Practices for Logging in Python

Logging is an essential component of software development, playing a vital role
in monitoring and debugging applications. It also serves as a valuable method
for gaining a thorough understanding of application performance in real-world
scenarios. By utilizing logs, developers can easily monitor, debug, and identify
patterns that can inform product decisions.

As your application collects more data, adopting proper logging practices
becomes crucial for swiftly and efficiently comprehending the overall
functionality. This enables you to address issues before they impact end-users.

In this article, we will delve into the best practices for logging in Python. By
following these practices, you can ensure that the logs generated are
informative, actionable, and scalable. Let's get started!

## Prerequisites

This article assumes that you have a basic understanding of Python and its
[logging concepts](https://betterstack.com/community/guides/logging/how-to-start-logging-with-python/).

[summary]
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## 1. Avoid the root logger

The root logger is the default logger in the Python `logging` module. While it
can be tempting to use the root logger to simplify logging code, there are
several reasons why it should be avoided:

- **Lack of control**: When you use the root logger, you have limited control
  over how log messages are handled. This can lead to issues where log messages
  are sent to unexpected destinations, or where log levels are set incorrectly.

- **Difficulty in managing loggers**: When using the root logger, it can be
  challenging to manage multiple loggers in a complex application. This can lead
  to issues where log messages are duplicated, or where loggers are not properly
  configured.

- **Inability to separate log data**: The root logger is shared across all
  modules and components in an application. This can make it challenging to
  separate log data by module or component, which can be important when
  analyzing log data.

- **Security risks**: The root logger can be modified by any module in an
  application, which can create security risks if an attacker is able to modify
  log settings.

Instead of using the root logger, it is recommended to create a logger for each
module or component in an application. This allows you to control log settings
for each logger independently, and makes it easier to separate log data for
analysis.

To create a logger for each module in Python, you can use the
`logging.getLogger()` method, which returns a logger object that you can use to
log messages for that module. Here is an example of how to create a logger for a
module called `my_module`:

```python
logger = logging.getLogger("my_module")
```

The `getLogger()` method takes a name argument, which is used to identify the
logger. Typically, you would use the name of the module as the logger name to
make it easy to identify which module is generating log messages.

You can also write it as follows:

```python
logger = logging.getLogger(__name__)
```

Once you have created a logger for a module, you can use the standard logging
methods to log messages, such as `debug()`, `info()`, `warning()`, `error()`,
and `critical()`.

By default, loggers propagate messages up to the root logger, so it is important
to set the propagate attribute to `False` for each logger that you create. This
prevents log messages from being duplicated or handled by unexpected loggers.
Here is an example of how to disable propagation for a logger:

```python
logger.propagate = False
```

By creating a separate logger for each module in your application, you can
control log settings independently and organize log data in a way that makes it
easy to analyze and troubleshoot issues.

## 2. Centralize your logging configuration

As your application grows and becomes more complex, managing logging
configurations can become more challenging. Centralizing the configurations can
help ensure that logging is handled consistently and efficiently as your
application scales.

It can also allow you to customize the logging settings based on the deployment
environment. For example, you may want to log more information in development or
testing environments, but only log essential information in production.

Thus, logging configuration should be done at the application level rather than
in individual modules. This can ensure that all log messages are handled
consistently across your application. This can help improve the readability and
maintainability of your codebase, as well as make it easier to troubleshoot
issues.

Here are some steps to centralize logging configuration in Python:

1. **Create a separate module for logging configuration**: Create a new Python
   module that will contain all the logging configuration code. This module
   should import the logging module and contain all the necessary
   configurations.

2. **Define your logging settings**: Define your desired logging settings, such
   as log format, log level, and log output destination. You can also define
   additional handlers and formatters as needed.

3. **Import logging settings into your application**: Import the logging
   configuration module into your main application code. This will allow you to
   use the same logging settings across all modules in your application.

4. **Set the logging configuration**: Set the logging configuration by calling
   the `logging.config.dictConfig()` method and passing in your logging settings
   dictionary. This method will configure the logging module with your specified
   settings.

Here's an example of a centralized logging configuration for a Python project
that uses the [python-json-logger](https://github.com/madzak/python-json-logger)
library to output structured logs:

```python
[label logging_config.py]
import logging.config
from pythonjsonlogger import jsonlogger

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "json": {
            "format": "%(asctime)s %(levelname)s %(message)s",
            "class": "pythonjsonlogger.jsonlogger.JsonFormatter",
        }
    },
    "handlers": {
        "stdout": {
            "class": "logging.StreamHandler",
            "stream": "ext://sys.stdout",
            "formatter": "json",
        }
    },
    "loggers": {"": {"handlers": ["stdout"], "level": "DEBUG"}},
}


logging.config.dictConfig(LOGGING)
```

In the above example, we defined a dictionary called `LOGGING` that contains all
the logging configuration settings such as log format, log level, and log output
destination. The `configure_logging()` function uses the
`logging.config.dictConfig()` method to configure the logging module with our
specified settings.

To use this centralized logging configuration in your Python application, you
just need to import the `configure_logging()` function and call it at the start
of your application:

```python
[label main.py]
import logging_config
import logging

logger = logging.getLogger(__name__)

logger.info("An info")
logger.warning("A warning")
```

```json
[output]
{"asctime": "2023-04-27 14:50:35,894", "levelname": "INFO", "message": "An info"}
{"asctime": "2023-04-27 14:50:35,895", "levelname": "WARNING", "message": "A warning"}
```

## 3. Use correct log levels

[Log levels](https://betterstack.com/community/guides/logging/log-levels-explained/) are used to indicate the severity of a log
message in a software application. They are a way to categorize log messages
based on their importance or significance. In Python, each log level is
associated with a numerical value or a constant name that represents a certain
level of severity.

Python’s logging module supports five different logging levels, from highest to
lowest severity:

- **CRITICAL**: This level shows errors that are very serious and require urgent
  attention or the application itself may be unable to continue running.

  For example, if an error occurs while connecting to the database, we can catch
  the exception and log the error using the critical log level so that we can
  investigate the issue and resolve it before the application crashes or causes
  data loss:

  ```python
  def connect_to_database():
      try:
          # connect here
      except Exception as e:
          logger.critical("Failed to connect to database: %s", e,  exc_info=True)
          exit(1)
      return conn
  ```

- **ERROR**: This level shows an error or failure to perform some task or
  functions. For example, you might use error logging to track database errors
  or HTTP request failures. Here's an example:

  ```python
  def process_request(request):
    try:
        # Process the request
    except Exception as e:
        logger.error('Error processing request: %s', e, exc_info=True)
        # Return an error message to the user
  ```

- **WARNING**: This level shows information that indicates that something
  unexpected happened or there is a possibility of problem in future, e.g. ‘disk
  space low’. This is not an error and the application still works fine but
  requires your attention.

  Here's an example:

  ```python
  def low_memory_check():
    available_memory = get_available_memory()
    if available_memory < 1024:
        logger.warning('Low memory detected')
        # Send an alert to the you
  ```

- **INFO**: This level depicts general information about the application to
  ensure that it is running as expected.

  For example, you might use `INFO` logging to track how often certain features
  are used or a notable event in your application lifecycle. Here's an example:

  ```python
  def some_function(record_id):
    # Do some processing
    logger.info('New record created in the database. ID: %s', record_id)
  ```

- **DEBUG**: This level shows detailed information, typically of interest only
  when diagnosing problems in the application. For example, you can use the
  debug log level to log the data that is being acted on in a function:

  ```python
  def get_user_info(user_id):
    logger.debug('Retrieving user info for user with ID: %s', user_id)
    # Fetch user info from the database
    user_info = database.get_user_info(user_id)
    logger.debug('Retrieved user info: %s', user_info)
    return user_info
  ```

Setting the appropriate log level also allows you to control which messages are
displayed in the log output. For example, if the log level is set to `INFO`,
only log messages with an `INFO` level or higher (i.e. `WARNING`, `ERROR`, and
`CRITICAL`) will be recorded. This can be useful in production environments
where you only want to see messages that indicate an issue that needs immediate
attention.

Here’s an example of how you can configure the logging level to `ERROR` in
Python:

```python
LOGGING = {
    # the rest of your config
    "loggers": {"": {"handlers": ["stdout"], "level": "ERROR"}},
}

logging.config.dictConfig(LOGGING)
```

Logging can impact application performance, so its important to be mindful of
how often and how much you are logging. Be sure to log enough information to
enable you diagnose issues, but not so much that it impacts the performance of
the application.

## 4. Write meaningful log messages

Writing meaningful log messages is important because they help you understand
what is happening within an application at any given time. When an issue or
error occurs, logs can be used to diagnose the problem and fix it quickly.
Meaningful log messages can make this process much easier and faster. We have also compiled [a list of the most common Python errors](https://betterstack.com/community/guides/scaling-python/python-errors/) with their respective fixes.

Moreover, in production environments, logs are often monitored to ensure the
application is running smoothly. Meaningful log messages can help operators
quickly identify any issues that may arise.

Also as applications grow and evolve, it can be difficult to remember how
different parts of the system work. Meaningful log messages can serve as a form
of documentation, reminding you of what happened in the past and how the
application has evolved over time.

To ensure that your log messages are meaningful, easy to understand, provide
context and help you diagnose and fix issues quickly, here are few tips that you
can follow:

- **Be clear and concise:** Log messages should be easy to understand and to the
  point. Avoid using technical jargon or complex sentences.

- **Provide context:** Include information about the context of the log message.
  This could include the function or module where the log message was generated,
  the user who initiated the action, input parameters, or any relevant data that
  will help understand the message.

- **Be consistent:** Use a consistent format for log messages across your
  application. This makes it easier to read and understand them, especially when
  you have many log messages such as in a production environment.

- **Use placeholders:** Use placeholders for values that will be dynamically
  inserted into the log message. This makes it easier to read and understand the
  message, and also prevents sensitive data from being logged.

  Here's an example of using placeholders in a log statement to generate a
  meaningful message:

  ```python
  name = 'Alice'
  age = 30
  salary = 50000

  logger.info("Employee name: %s, age: %s, salary: %s", name, age, salary)
  ```

  The above log statement includes three placeholders `%s`, which are replaced
  with the values of the name, age, and salary variables when the log message is
  generated.

  The resulting log message would look something like this (assuming you're
  using the logging configuration shown
  [here](#2-centralize-your-logging-configuration):

  ```text
  {"asctime": "2023-04-27 20:31:54,737", "levelname": "INFO", "message": "Employee name: Alice, age: 30, salary: 50000"}
  ```

  By using placeholders in this way, we can create meaningful log messages that
  include dynamic values. This makes it easier to understand and troubleshoot
  issues in our application, as we can see the specific values that were
  involved in a given operation or event.

- **Provide actionable insights:** Include information that is actionable, such
  as suggestions for how to resolve an issue or links to relevant documentation.

  Here's an example where the log message is designed to provide actionable
  insights to whoever is reading the logs, by suggesting to consider collecting
  more data before proceeding with the data processing:

  ```python
  data = [1, 2, 3, 4, 5]

  if len(data) < 6:
    logging.warning("Data is too small. Consider collecting more data before proceeding.")
  else:
    # process data
    pass
  ```

  To summarize our understanding, let's look at some examples of meaningful and
  not-so-meaningful log messages:

**Good log messages**:

1. User with ID 'user-123' authenticated successfully
2. File uploaded successfully to server at path: /home/user/uploads/file.txt
3. Payment of $50 was successfully processed with transaction ID: 123456

In the above examples, the log messages are clear, concise, and provide useful
information for debugging and troubleshooting. They indicate what action was
taken, whether it was successful or not, and any relevant details that may be
helpful in identifying the root cause of a problem.

**Bad log messages**:

1. Error occurred
2. Something went wrong
3. Failed to complete action

In the above examples, the log messages are too vague and do not provide any
useful information for debugging or troubleshooting. They do not indicate what
action was taken, what caused the error, or what steps should be taken to
resolve the issue.

## 5. `%` vs f-strings for string formatting in logs

In Python, there are two main ways to format strings: using % formatting and
f-strings. However, there are some differences between the two methods that may
make one more suitable than the other in certain cases.

Here are some considerations for when to use each approach for string formatting
in logs:

**Use `%` formatting when**:

1. You need compatibility with older versions of Python that don't support
   f-strings.
2. You need to format a wider range of data types, such as legacy code that may
   use `%` formatting for formatting complex data types.
3. You need to control the output more precisely.
4. `%` formatting can be more performant than f-strings, especially for large
   numbers of log messages.

**Use f-strings when**:

1. You are using Python 3.6 or later and prefer the syntax and readability of
   f-strings.
2. You need to include expressions or call functions within the string format,
   such as when you want to include the result of a calculation or function call
   in a log message.
3. You want to simplify the string formatting syntax and reduce the likelihood
   of syntax errors.
4. The performance downsides of f-strings are not significant for your use case.

Ultimately, the choice between `%` formatting and f-strings for string
formatting in logs depends on your personal preference, the requirements of your
application, and the Python version you are using. Both approaches can be
effective for formatting log messages, and you should choose the one that works
best for your specific use case.

However, it is generally recommended to be consistent in your use of string
formatting across your codebase to improve readability and maintainability.

## 6. Logging using a structured format (JSON)

Traditional text-based logging formats, while useful, can be difficult to read
and analyze, particularly as applications become more complex. Structured
logging provides a solution to this problem by using a standardized format, such
as JSON, to log data in a structured way.

By using a structured logging format, developers can easily parse and analyze
log data, making it easier to identify and troubleshoot issues.

Here are some of the benefits of using structured JSON logging:

- **Improved readability and searchability**: Structured JSON logs are easier to
  read and search compared to traditional text logs. By using a standardized
  JSON format, you can easily parse and analyze log data using tools like
  Elasticsearch or Kibana.

- **Consistency across components**: When different components of an application
  use different logging formats, it can be challenging to analyze logs across
  the entire application stack. By using a standardized JSON format, you can
  ensure that all components use the same format, making it easier to analyze
  logs across the entire application.

- **Better context and metadata**: With structured JSON logging, you can add
  additional metadata to your logs, such as request IDs, user IDs, or
  timestamps. This metadata can provide valuable context when troubleshooting
  issues or analyzing log data.

- **Support for structured data**: JSON is a flexible format that supports
  structured data, making it easy to log complex data structures like
  dictionaries or lists. By using a structured format, you can avoid the need
  for parsing text logs, which can be error-prone and time-consuming.

- **Scalability**: As your application grows, the volume of logs generated by
  your application can increase significantly. By using a structured JSON
  format, you can easily scale your logging infrastructure to handle large
  volumes of log data.

There are several Python logging libraries that support structured JSON logging,
such as [python-json-logger](https://github.com/madzak/python-json-logger),
[loguru](https://betterstack.com/community/guides/logging/loguru/), and [structlog](https://betterstack.com/community/guides/logging/structlog/).

Once you have installed any of these libraries and configured the logger, you
can use it to write logs in a structured JSON format. To do this, you can call
the `logger.info()` method (or any other logging method) and pass in a
dictionary of key-value pairs representing the log message.

Here's an example using `loguru`:

```python
import sys
from loguru import logger

logger.remove(0)
logger.add(
    sys.stdout,
    format="{time:MMMM D, YYYY > HH:mm:ss!UTC} | {level} | {message}",
    serialize=True,
)
logger.info("Incoming API request: GET /api/users/123")
```

This will write a JSON log message to the standard output with the following
structure:

```json
{"text": "April 27, 2023 > 19:50:33 | INFO | Incoming API request: GET /api/users/123\n", "record": {"elapsed": {"repr": "0:00:00.017884", "seconds": 0.017884}, "exception": null, "extra": {}, "file": {"name": "main.py", "path": "/home/betterstack/dev/demo/python-logging/main.py"}, "function": "<module>", "level": {"icon": "ℹ️", "name": "INFO", "no": 20}, "line": 21, "message": "Incoming API request: GET /api/users/123", "module": "main", "name": "__main__", "process": {"id": 407115, "name": "MainProcess"}, "thread": {"id": 140129253443392, "name": "MainThread"}, "time": {"repr": "2023-04-27 20:50:33.843118+01:00", "timestamp": 1682625033.843118}}}
```

You can also use the logging library's built-in features to add additional
context to your logs, such as timestamps, log levels, and exception stack
traces.

## 7. Include timestamps and ensure consistent formatting

Logging without a timestamp is only marginally better than not knowing about the
event at all. By including a timestamp in your logs, you can make the lives of
those who use logs for troubleshooting much easier. Moreover, timestamps allow
you to analyze log entries to gain insights and analytics about user and program
behavior over time.

When different systems or components need to exchange timestamp data, it is
essential that they all use the same format to ensure interoperability. Choosing
an inappropriate format for timestamps can create chaos by conflicting with
other services that are currently being used or may be used in the future for
log management or application monitoring.

To avoid this, it is best to adopt a standard format for timestamps. One such
standard format is **ISO-8601**, which is an internationally recognized standard
for exchanging date- and time-related data.

By adhering to this standard, you can ensure that your timestamps are compatible
with a wide range of tools and services, reducing the likelihood of conflicts or
issues in the future.

Here’s how a timestamp expressed in ISO-8601 format:

```text
2022-06-15T04:32:19.955Z
```

This is a basic example of how to configure the formatting to allow ISO-8601
timestamps:

```python
LOGGING = {
    "formatters": {
        "json": {
            "format": "%(asctime)s %(levelname)s %(message)s",
            [highlight]
            "datefmt": "%Y-%m-%dT%H:%M:%SZ",
            [/highlight]
            "class": "pythonjsonlogger.jsonlogger.JsonFormatter",
        }
    },
}

logging.config.dictConfig(LOGGING)
```

## 8. Keep sensitive information out of logs

Sensitive data should be kept out of logs because logs are often used for
troubleshooting and debugging purposes, and can contain sensitive information
such as user passwords, credit card numbers, or other private data. If logs are
not properly secured or managed, they can become a target for hackers and other
malicious actors who may attempt to gain access to this sensitive data.

Additionally, logs are often stored in plain text files or other unencrypted
formats, making them vulnerable to unauthorized access or disclosure. By keeping
sensitive data out of logs, you can help protect their users' privacy and reduce
the risk of data breaches or other security incidents.

Here are some general tips to keep sensitive data out of logs and reduce the
risk of sensitive data being exposed:

- **Avoid logging sensitive data**: The simplest way to keep sensitive data out
  of logs is not to log it in the first place. Ensure that your logging system
  is configured to exclude sensitive data.

- **Mask or redact sensitive data**: If sensitive data needs to be logged, you
  can mask or redact it. For example, you can replace credit card numbers or
  passwords with a series of asterisks or replace them with a hash value.

For example, if the credit card number is "1234-5678-9012-3456", it can be
masked or redacted. Here's how to use filters to implement log redaction in
Python:

```python
[label logging_config.py]
import logging
import logging.config
from pythonjsonlogger import jsonlogger
import re


class SensitiveDataFilter(logging.Filter):
    pattern = re.compile(r"\d{4}-\d{4}-\d{4}-\d{4}")

    def filter(self, record):
        # Modify the log record to mask sensitive data
        record.msg = self.mask_sensitive_data(record.msg)
        return True

    def mask_sensitive_data(self, message):
        # Implement your logic to mask or modify sensitive data
        # For example, redact credit card numbers like this
        message = self.pattern.sub("[REDACTED]", message)
        return message


LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "filters": {
        "sensitive_data_filter": {
            "()": SensitiveDataFilter,
        }
    },
    "formatters": {
        "json": {
            "format": "%(asctime)s %(levelname)s %(message)s",
            "datefmt": "%Y-%m-%dT%H:%M:%SZ",
            "class": "pythonjsonlogger.jsonlogger.JsonFormatter",
        }
    },
    "handlers": {
        "stdout": {
            "class": "logging.StreamHandler",
            "stream": "ext://sys.stdout",
            "formatter": "json",
            "filters": ["sensitive_data_filter"],
        }
    },
    "loggers": {"": {"handlers": ["stdout"], "level": "INFO"}},
}


logging.config.dictConfig(LOGGING)
```

```python
[label main.py]
import logging_config
import logging

logger = logging.getLogger(__name__)

credit_card_number = "1234-5678-9012-3456"
logger.info(f"User made a payment with credit card number: {credit_card_number}")
```

```json
[output]
{"asctime": "2023-04-27T21:36:39Z", "levelname": "INFO", "message": "User made a payment with credit card number: [REDACTED]"}
```

- **Use environment variables:** You can store sensitive data, such as API keys
  or database credentials, in environment variables instead of hardcoding them
  into your code. This way, the values will not be logged.

- **Limit the scope of logs:** You can limit the scope of logs by only logging
  what is necessary. This means you can log only errors or critical events and
  not all events. Additionally, you can also limit the amount of information
  logged by your application.

- **Encrypt log data:** You can encrypt log data to keep sensitive information
  secure. This will ensure that only authorized personnel can access and read
  the logs.

- **Use a secure log management solution:** Ensure that the logging system you
  are using is secure and has appropriate controls in place to prevent
  unauthorized access to sensitive data.

## 9. Rotate your log files

Rotating log files means creating new log files periodically and archiving or
deleting the old ones. The purpose of rotating log files is to manage log file
size, improve performance, preserve log data, simplify debugging, and enhance
security. If log files are not rotated, they can consume valuable disk space and
cause performance issues.

There are several strategies for rotating log files, including:

- **Time-based rotation:** Create a new log file at fixed time intervals (e.g.,
  daily or weekly) and archive or delete old log files.

- **Size-based rotation:** Create a new log file when the current log file
  reaches a certain size limit (e.g., 10 MB) and archive or delete old log
  files.

- **Hybrid rotation:** Combine time-based and size-based rotation strategies to
  create new log files at fixed time intervals and archive or delete old log
  files based on size limits.

In Python, we can rotate log files using the built-in logging module. The
logging module provides a `RotatingFileHandler` class that allows you to create
log files that are rotated based on a specified size or time interval.

Here's an example of how to use the `RotatingFileHandler` class to rotate log
files based on size:

```python
# Create a logger
logger = logging.getLogger('my_logger')
logger.setLevel(logging.DEBUG)

# Create a rotating file handler
handler = logging.handlers.RotatingFileHandler(
    'my_log.log', maxBytes=1000000, backupCount=5)

# Set the formatter for the handler
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)

# Add the handler to the logger
logger.addHandler(handler)

# Test the logger
logger.debug('Debug message')
```

In this example, we create a logger named my_logger and set the log level to
DEBUG. We then create a `RotatingFileHandler` with a maximum file size of 1 MB
and a backup count of 5.

This means that once the log file reaches 1 MB, a new log file will be created
and the old log file will be archived. The backup count specifies the number of
archived log files to keep.

We set the formatter for the handler to include the timestamp, logger name, log
level, and log message. Finally, we add the handler to the logger and log a
debug message.

This is just a simple example of how to rotate log files using the logging
module in Python. We generally recommend leaving log rotation concerns to an
external tool like
[logrotate](https://betterstack.com/community/guides/logging/how-to-manage-log-files-with-logrotate-on-ubuntu-20-04/) which can
help you enforce consistency in log rotation policies across multiple
applications or services running on the same machine.

## 10. Centralize your logs in one place

As soon as your application is deployed to production, it will immediately start
generating logs, which are usually stored on the host server. While logging into
one or two servers may be practical enough for log viewing and analysis, this
practice becomes tedious and ineffective as your application scales across
dozens of servers.

By centralizing logs, you can simplify log management by consolidating logs from
multiple sources into a single location. This makes it easier to search,
analyze, and monitor logs and reduces the need to manage logs across multiple
systems.

Centralizing logs at one place has several advantages such as the following:

- **Improve troubleshooting:** Centralizing logs makes it easier to troubleshoot
  issues by providing a single source of truth for log data. This allows you to
  correlate events across different systems and identify the root cause of
  issues more quickly.

- **Enhance security:** Centralizing logs can enhance security by providing a
  centralized location for monitoring and detecting security threats. By
  analyzing logs from multiple systems, you can identify patterns and anomalies
  that may indicate a security breach.

- **Increase scalability:** Centralizing logs can increase scalability by
  allowing you to collect and store large volumes of log data in a centralized
  location. This makes it easier to scale your log infrastructure as your system
  grows.

- **Facilitate compliance:** Centralizing logs can facilitate compliance with
  regulatory requirements by providing a centralized location for storing and
  auditing log data. This makes it easier to demonstrate compliance with
  regulations and standards.

When choosing a cloud logging solution, there are several factors to consider:

- **Features:** Look for a solution that provides the features you need, such as
  real-time log streaming, search and analysis capabilities, and alerts and
  notifications.

- **Scalability:** Make sure the solution can handle your current log volume and
  can scale as your log volume grows.

- **Integration:** Ensure the solution can integrate with your existing systems
  and tools, such as your logging frameworks, monitoring and alerting tools, and
  cloud platforms.

- **Security:** Look for a solution that provides robust security features, such
  as encryption, access controls, and data retention policies.

- **Cost:** Consider the cost of the solution, including any upfront fees,
  ongoing subscription costs, and any additional costs for features like storage
  or data processing.

- **Support:** Check the level of support provided by the vendor, including
  documentation, technical support, and community forums.

- **Ease of use:** Look for a solution that is easy to set up, configure, and
  use, with an intuitive interface and clear documentation.

By considering these factors, you can choose a cloud logging solution that meets
your needs and helps you better manage and analyze your log data.

Better Stack provides a comprehensive set of features and more, including effortless
log data collection, filtering, and correlation from multiple sources, all of
which can be analyzed in a single location.

<iframe width="100%" height="315" src="https://www.youtube.com/embed/XJv7ON314k4" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>

In addition, Logtail offers built-in collaboration tools that allow users to
share insights with team members or draw attention to specific issues. 

<iframe width="100%" height="315" src="https://www.youtube.com/embed/NWRnByOuXtc" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>

To begin using Better Stack, simply [sign up for a free account](https://logtail.com/users/sign-up) and review the [documentation](https://betterstack.com/docs/logs/logging-start/) to explore integration options with your Python application.


## Final thoughts

In conclusion, implementing the best logging practices in Python can greatly
improve the maintainability, performance, and security of your application. By
**following these practices, you can ensure that your logs are well-structured,
properly formatted, and easy to search and analyze**. You can also reduce the risk
of sensitive data being exposed in your logs and minimize the impact of log file
size on your system's performance.

To achieve the best logging practices, it is important to use appropriate log
levels and message formats, and implement proper error handling and exception
logging. Additionally, you should consider implementing log rotation and
retention policies to ensure that your logs are properly managed and archived.

By prioritizing logging as a key aspect of your development process, you can
gain valuable insights into your application's behavior, diagnose problems
quickly, and ultimately improve the overall quality and reliability of your
software.

Thanks for reading, and happy logging!