“”"
!/usr/bin/env python
-- coding: utf-8 --
@Time : 2022/3/4 10:57
@Author : MarkJia
@Site :
@File : 1、数据类型.py
“”"
import time
字符串相加str_ = r’abnc’
current_time = time.strftime(’%Y-%m-%d %H-%M-%S’)
print(str_ + current_time)
a = ‘abcdefg’
取值：前闭后开print(a[1:2])
for i,j in enumerate(a):
print(f’索引为{i}的值为{j}’)
try:
print(a[100])
except Exception as e:
print(f’错误信息:{e}’)
print(a[::-1])
