Python note

the blog is really fantistic http://www.cnblogs.com/taowen/articles/11239.aspx

After hours of study, I think it's need to keep a note.

1. when u want to add in a list, u should should use append, and u should know the mechanisation. list.append(a) mean link the address of a, so when the a is modified, the element in list changed accordingly.

2. list can contain the various structs, likes list = [1, 2, {'hello', 'world'}]

3.   print 1, "a" + "1"    1 a1
　　print 1, "a" , "1"     1 a 1
　　print i + "a" , "1"     error

4. turple is read_only, it's the difference between the list

5. xxx = file('c:\\a.txt', 'r') or xxx = file('c:/a.txt', 'r')

6. the python to exe, we should write the setup.py

#setup
from distutils.core import setup
import py2exe
setup(console=["hello.py"])

then u can type "python setup.py py2exe" in dos window

7. when u want to completion, u can use the key "Ctrl + /"

转载于:https://www.cnblogs.com/chuanlong/archive/2013/05/04/3060209.html