How can I remove a comma from a Python string, such as “Foo, bar”? I tried using 'Foo, bar'.strip(','), but it didn’t work. How can I achieve this in Python?
I’ve dealt with this before! The strip() method only removes characters from the beginning or end of a string, not the middle. To remove a comma from a string in Python, you can use the replace() method like this:
s = s.replace(',', '')
This will replace all commas in the string with an empty string.
Good point, Sam! If you’re working with more complex cases or want to explore regular expressions, you can also use re.sub() from Python’s re module. This is especially useful if you have multiple or more complicated patterns to handle. Here’s how you can remove a comma from a string in Python using re.sub():
import re
s = re.sub(r',', '', s)
This will replace all commas in the string, just like replace(), but gives you more flexibility for advanced scenarios!
Both of those methods are great! Another approach, which I’ve used when working with custom filtering, is to use a list comprehension to rebuild the string without commas. This is particularly useful if you’re filtering specific characters. Here’s how you can remove a comma from a string in Python using a list comprehension:
s = ''.join([char for char in s if char != ','])
This method essentially loops through each character in the string and joins only the ones that aren’t commas. It’s a nice alternative if you like working at the character level.