Python从字符串中删除字母？

Question

Without using python's re.sub , how would I remove and print ONLY letters from a string with no spaces?

For example I want ("ABCD!@#( EFGH@!(# IJ K912??") to print out as ABCDEFGHIJK

Answer 1

Here's a simple approach:

s = "ABCD!@#( EFGH@!(# IJ K912??"
print "".join(c for c in s if c.isalpha())

Answer 2

You could use the string class. Do you want upper case only, lower case, or both? If upper, use string.ascii_uppercase, if lower, use string.ascii_lowercase, if both use string.ascii_letters. Example:

import string
temp = "ABCD!@#( EFGH@!(# IJ K912??"
print(''.join([t for t in temp if t in string.ascii_letters]))