# String的内置方法
# st='hello kitty {name} is {age}'
#
# print(st.count('l')) # 统计元素个数
# print(st.capitalize()) # 首字母大写
# print(st.center(50,'#')) # 居中
# print(st.endswith('tty3')) # 判断是否以某个内容结尾
# print(st.startswith('he')) # 判断是否以某个内容开头
# print(st.expandtabs(tabsize=20))
# print(st.find('t')) # 查找到第一个元素,并将索引值返回
# print(st.format(name='alex',age=37)) # 格式化输出的另一种方式 待定:?:{}
# print(st.format_map({'name':'alex','age':22}))
# print(st.index('t'))
# print('asd'.isalnum())
# print('12632178'.isdecimal())
# print('1269999.uuuu'.isnumeric())
# print('abc'.isidentifier())
# print('Abc'.islower())
# print('ABC'.isupper())
# print(' e'.isspace())
# print('My title'.istitle())
# print('My tLtle'.lower())
# print('My tLtle'.upper())
# print('My tLtle'.swapcase())
# print('My tLtle'.ljust(50,'*'))
# print('My tLtle'.rjust(50,'*'))
# print('\tMy tLtle\n'.strip())
# print('\tMy tLtle\n'.lstrip())
# print('\tMy tLtle\n'.rstrip())
# print('ok')
# print('My title title'.replace('itle','lesson',1))
# print('My title title'.rfind('t'))
# print('My title title'.split('i',1))
# print('My title title'.title())
#摘一些重要的字符串方法
#1 print(st.count('l'))
# print(st.center(50,'#')) # 居中
# print(st.startswith('he')) # 判断是否以某个内容开头
# print(st.find('t'))
# print(st.format(name='alex',age=37)) # 格式化输出的另一种方式 待定:?:{}
# print('My tLtle'.lower())
# print('My tLtle'.upper())
# print('\tMy tLtle\n'.strip())
# print('My title title'.replace('itle','lesson',1))
# print('My title title'.split('i',1))
来源:https://www.cnblogs.com/bdua/p/12174426.html