Python基础练习题-2

怎么打印包含所有ASCII字母的字符串

import string
string.ascii_letters

# 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

怎么让字符串居中

str_1 = 'Hello world'
print(str_1.center(50))
print(str_1.center(50, '*'))
# '                    Hello world                    '
# '*******************Hello world********************'

首字母大写

解法一，使用字符串的title方法

s = "i am a software test engineer."
print(s.title())

# I Am A Software Test Engineer.

解法二， 使用字符串的capwords方法

s = "i am a software test engineer."
print(string.capwords(s))

# I Am A Software Test Engineer.