题解 | 大小写转换
大小写转换
https://www.nowcoder.com/practice/4e089ee8966a4ed4b306f64e68d45264
import sys
def read_multiline_input():
content = sys.stdin.read()
return content.strip().split('\n')
# Usage
lines = read_multiline_input()
for line in lines:
print(line.lower())
