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Code
Diff
  • from itertools import filterfalse
    digits = "0123456789".__contains__
    
    remove_numbers=lambda x:''.join(filterfalse(digits, x))
    • from itertools import filterfalse
    • digits = "0123456789".__contains__
    • remove_numbers=lambda x:''.join(map(lambda x: x if not digits(x) else "", x))
    • remove_numbers=lambda x:''.join(filterfalse(digits, x))