check if string has certain characters python code example

Example 1: how to check if all characters in string are same python

s == len(s) * s[0]

Example 2: python check if character is letter

>>> 'A'.isalpha()
True
>>> '1'.isalpha()
False

Example 3: python if string contains char

myString = "<text contains this>"
myOtherString = "AnotherString"

# Casting to string is not needed but it's good practice
# to check for errors 

if str(myString) in str(myOtherString): 
    # Do Something
else:
	# myOtherString didn't contain myString

Example 4: python check if string contains one of characters list

if any(ext in url_string for ext in extensionsToCheck):
    print(url_string)

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