从字符串中删除非字母字符

Question

I have a string like "lake1!" and I want to remove non nonalphabet characters from this string.

How can I do that? Also, this is just an example but in general if have some string how can I remove nonalphabet characters from it?

For example: "lake1!" should return "lake" with 1 and ! removed.

Answer 1

You can use a generator expression to filter out all non-ascii letters, the use join to create a string from that.

>>> from string import ascii_lowercase
>>> s = "lake1!"
>>> ''.join(i for i in s if i in ascii_lowercase)
'lake'

Or to include both lowercase and uppercase letters you can just check if the character isalpha

>>> s = "Some123?1Example"
>>> ''.join(i for i in s if i.isalpha())
'SomeExample'

Answer 2

word = 'lake1!'
new_word = ''
for char in word:
    if char.isalpha():
        new_word += char