修改字符串首字母的大小写
s1 = 'hello' print(s1) print(s1.capitalize()) # s1[0] = 'H' # 只读的,会抛出异常 s1 = s1[0:1] + s1[1].upper() + s1[2:] print(s1) hello Hello hEllo
拆分字符串
如何将字符串中每个单词的首字母变成大写
s3 = 'hello world' print(s3) arr = s3.split(' ') arr = [s.capitalize() for s in arr] s3 = ' '.join(arr) print(s3) hello world Hello World