#Python字符串操作
msg = "hello 123 WORLD"
#输出字符串的总长度,并输出其中小写字母的个数
length = len(msg)
print("字符串的总长度:",length)
sum_msg = sum(1 for ch in msg if ch.islower())
print("输出其中小写字母的个数:",sum_msg)
I1B5dGhvbuWtl+espuS4suaTjeS9nAptc2cgPSAiaGVsbG8gMTIzIFdPUkxEIgoj6L6T5Ye65a2X56ym5Liy55qE5oC76ZW/5bqm77yM5bm26L6T5Ye65YW25Lit5bCP5YaZ5a2X5q+N55qE5Liq5pWwCmxlbmd0aCA9IGxlbihtc2cpCnByaW50KCLlrZfnrKbkuLLnmoTmgLvplb/luqbvvJoiLGxlbmd0aCkKCnN1bV9tc2cgPSBzdW0oMSBmb3IgY2ggaW4gbXNnIGlmIGNoLmlzbG93ZXIoKSkKcHJpbnQoIui+k+WHuuWFtuS4reWwj+WGmeWtl+avjeeahOS4quaVsO+8miIsc3VtX21zZyk=