环境介绍
基本《Python 基础教程（第2版 修订版）》 作者：[挪] Magnus Lie Hetland 司维 曾军崴 谭颖华 译
操作系统：CentOS release 6.9 (Final)
python版本：Python 2.6.6
程序编辑器：VIM - VI IMproved 7.4
代码：
#!/usr/bin/env python
database = [
[‘albert‘,‘1234‘],
[‘dilbert‘,‘4242‘],
[‘smith‘,‘7524‘],
[‘jones‘,‘9843‘]
]
username = raw_input(‘User name: ‘)
pin = raw_input(‘PIN code: ‘)
if [username,pin] in database:
print ‘Access granted‘
else:
print ‘Hello,stranger‘
报错：
[[email protected] python]# python database1.py
File "database1.py", line 13
else:
^
IndentationError: unindent does not match any outer indentation level
问题排查：
报错提示，没有对齐，对比分析后else 要跟if 进行左对齐
对齐后，报错问题解决。
代码：
#!/usr/bin/env python
database = [
[‘albert‘,‘1234‘],
[‘dilbert‘,‘4242‘],
[‘smith‘,‘7524‘],
[‘jones‘,‘9843‘]
]
username = raw_input(‘User name: ‘)
pin = raw_input(‘PIN code: ‘)
if [username,pin] in database:
print ‘Access granted‘
else:
print ‘Hello,stranger‘
再执行成功
[[email protected] python]# python database1.py
User name: albert
PIN code: 1234
Access granted