python中查找字符串中字符出现的次数
1、
>>> test1 = "absacaxy"
>>> test1.count("a")
3
>>> test1.count("a",0,4) ## 设置查找范围
2
2、统计所有字符出现的次数
>>> test1 = "abdeaceb"
>>> a = set(test1)
>>> a
{'d', 'e', 'c', 'b', 'a'}
>>> for i in a:
test1.count(i)
1
2
1
2
2