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Description:
Complete the code which should return true if the given object is a single ASCII letter (lower or upper case), false otherwise.
Solution:
1. Get the ASCII code of the argument.
2. Check whether the obtained ASCII code corresponds to the alphabet.
3. True if true, false otherwise.
def is_letter(s):
ascii_num = len(s) == 1 and ord(s)
return (ascii_num >= 65 and ascii_num <= 90) or (ascii_num >= 97 and ascii_num <= 122
Bast Practice:
def is_letter(s):
return len(s) == 1 and s.isalpha()In Python, using isalpha(), you can check whether an alphabet is an alphabet without ASCII code.
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