CODEWITHSUNDEEP
python
KittyWhale
KittyWhale

Reputation: 89

Code to strip non-alpha characters from string in Python

I want to write a code that will take out all Non-Alpha character from a string. Alpha Characters are a-z,A-Z,and 0-9. So this code will also remove spaces but not crash on an empty string. For example:

to_alphanum('Cats go meow')
#it would return:
'Catsgomeow'

to_alphanum('')
#it would return:
''

Is there a way to do this?

Upvotes: 1

Views: 120

Answers (1)

heemayl
heemayl

Reputation: 42017

str has isalnum method to check for alphanumerics, leverage that:

In [115]: def to_alphanum(text): 
     ...:     return ''.join([char for char in text if char.isalnum()]) 
     ...:                                                                                                                                                                                                   

In [116]: to_alphanum('Cats go meow')                                                                                                                                                                       
Out[116]: 'Catsgomeow'

In [117]: to_alphanum('#$')                                                                                                                                                                                 
Out[117]: ''

In [118]: to_alphanum('190 $%6')                                                                                                                                                                            
Out[118]: '1906'

Upvotes: 1

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