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Another 5 Helpful Python String Methods
source link: https://dev.to/ayabouchiha/another-5-helpful-python-string-methods-jd
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Hello, I'm Aya Bouchiha,
this is the part 2 of 5 useful python string methods.
capitalize()
capitalize(): this string method converts to uppercase the first letter of the first word in the specified string.
first_name = "aya"
print(first_name.capitalize()) # Aya
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isalpha()
isalpha(): checks if all string's characters are alphabets letters [A-z].
print('AyaBouchiha'.isalpha()) # True
print('Aya Bouchiha'.isalpha()) # False
print('Aya-Bouchiha'.isalpha()) # False
print('AyaBouchiha 1'.isalpha()) # False
print('Aya Bouchiha!'.isalpha()) # False
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isdigit()
isdigit(): checks if all string's characters are digits.
print('100'.isdigit()) # True
print('12a'.isdigit()) # False
print('100 000'.isdigit()) # False
print('+212-6000-00000'.isdigit()) # False
print('12a'.isdigit()) # False
print('3\u00B2') # 3²
print('3\u00B2'.isdigit()) # True
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isalnum()
isalnum(): checks if all string's characters are alphanumeric (alphabets, numbers).
print('2021'.isalnum()) # True
print('30kviews'.isalnum()) # True
print('+212600000000'.isalnum()) # False
print('dev.to'.isalnum()) # False
print('[email protected]'.isalnum()) # False
print('Aya Bouchiha'.isalnum()) # False
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strip()
strip(characters(optional)): lets you delete the given characters (by default => whitespaces) at the start and at the end of the specified string.
print(' Aya Bouchiha '.strip()) # Aya Bouchiha
print(' +212612345678 '.strip(' +')) # 212612345678
print('Hi, I\'m Aya Bouchiha'.strip('Hi, ')) # I'm Aya Bouchiha
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Summary
- capitalize(): converts to uppercase the first letter of the first word in the specified string.
- isalpha(): checks if all string's characters are alphabets letters.
- isdigit(): checks if all string's characters are digits.
- isalnum(): checks if all string's characters are alphanumeric.
- strip(): deletes the given characters (by default => whitespaces) at the start and at the end of the specified string.
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