How do I parse a string to a float or int in Python?
To parse a string to a float in Python, you can use the float()
function. This function takes a string as input and returns a floating point number constructed from it. For example:
float('3.14') # returns float 3.14
To parse a string to an integer in Python, you can use the int()
function. This function takes a string as input and returns an integer constructed from it. For example:
int('42') # returns integer 42
Note that these functions will raise a ValueError
if the string cannot be parsed to the desired type.
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How do I split Python list into equally-sized chunks?
To split a list into equally sized chunks, you can use the grouper function from the itertools module. Here's an example of how you can use it: from itertools import zip_longest def grouper(iterabl...
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How do I concatenate two lists in Python?
You can concatenate two lists in Python by using the + operator or the extend() method. Here is an example using the + operator: list1 = [1, 2, 3] list2 = [4, 5, 6] list3 = list1 + list2 print(list...
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How to check if a given key already exists in a dictionary in Python?
You can use the in keyword to check if a key exists in a dictionary. For example: my_dict = {'a': 1, 'b': 2, 'c': 3} if 'a' in my_dict: print("Key 'a' exists in the dictionary") if 'd' in my_di...
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How can I safely create a nested directory in Python?
The most common way to safely create a nested directory in Python is using the pathlib or os modules. Using pathlib You can create a nested directory in python 3.5 or later using the Path and mkdir...
Questions
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