How to check if the string is empty in Python?
To check if a string is empty in Python, you can use the len()
function. For example:
string = ""
if len(string) == 0:
print("The string is empty")
You can also use the not
operator to check if the string is not empty:
string = ""
if not string:
print("The string is empty")
Alternatively, you can use the bool()
function to check if the string is empty. An empty string is considered to be False
, and all other strings are considered to be True
:
string = ""
if not bool(string):
print("The string is empty")
Note that all of these approaches treat a string that consists only of whitespace characters (such as spaces, tabs, or newlines) as being non-empty. To check if a string is empty or consists only of whitespace characters, you can use the strip()
function to remove leading and trailing whitespace and then check if the resulting string is empty:
string = " "
if not string.strip():
print("The string is empty or consists only of whitespace characters")
-
How to convert string into datetime in Python?
To convert a string into a datetime object in Python, you can use the datetime.strptime() function. This function allows you to specify the format of the input string, and it will return a datetime...
Questions -
How do I pad a string with zeroes in Python?
You can pad a string with zeros in Python by using the zfill() method. This method adds zeros to the left of the string until it reaches the specified length. Here's an example: s = '123' padded = ...
Questions -
Convert bytes to a string in Python and vice versa?
To convert a string to bytes in Python, you can use the bytes function. This function takes two arguments: the string to encode and the encoding to use. The default encoding is utf-8. Here is an ex...
Questions -
How do I get a substring of a string in Python?
To get a substring of a string in Python, you can use the string slicing notation, which is string[start:end], where start is the index of the first character of the substring, and end is the index...
Questions
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