msg = "hello 123 WORLD"
#统计长度和小写字母个数
length =len (msg)
lower_count = sum(1 for ch in msg if ch.islower())
print("长度:",length)
print("小写字母个数:", lower_count)
bXNnID0gImhlbGxvIDEyMyBXT1JMRCIKI+e7n+iuoemVv+W6puWSjOWwj+WGmeWtl+avjeS4quaVsApsZW5ndGggPWxlbiAgICAgICAgKG1zZykKbG93ZXJfY291bnQgPSBzdW0oMSBmb3IgY2ggaW4gbXNnIGlmIGNoLmlzbG93ZXIoKSkKcHJpbnQoIumVv+W6pu+8miIsbGVuZ3RoKQpwcmludCgi5bCP5YaZ5a2X5q+N5Liq5pWw77yaIiwgbG93ZXJfY291bnQp