>>> def count_sentence_string_info(s):..."""统计一下，一个英文句子中的，大写字母数量，小写字母数量和数字的数量"""...upper_letter_count=0...lower_letter_count=0...digit_count=0...for i in s:... if ord(i)>=ord("a") and ord(i)<=ord("z"):... lower_letter_count+=1... elif ord(i)>=ord("A")and ord(i)<=ord("Z"):... upper_letter_count+=1... elif i in "0123456789":... digit_count+=1...return upper_letter_count,lower_letter_count,digit_count...>>> s="I am a 9years old! sure? 18 ages!">>> print(count_sentence_string_info(s))(1, 19, 3)
统计小写字母的个数
>>> def count_letter(s):...result=0...for i in s:... if i>='a' and i<='z':... result+=1...return result...>>> count_letter("a1b3Z3")2
统计一句话中的数字
>>> def count_digits(s):...result=0...for i in s:... if i>='0' and i<='9':... result+=1...return result...>>> print(count_digits("a1b1c3d4"))4
统计一下单词里有几个a,
>>> s="abandon">>> result=0>>> for i in s:...if i=="a":... result+=1...>>> result2
