Python笔记

1 Quick Start

Install python2.7 from https://www.python.org/downloads/

Install pip:

$ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
$ sudo python get-pip.py

2 Basics

2.1 Numbers

Python 2.7.9 (default, Mar  1 2015, 12:57:24) 
>>> a = 3.23
>>> b = 4
>>> c = 52.3E-4
>>> print a, b, c
3.23 4 0.00523

2.2 Strings

#!/usr/bin/python

name1 = 'Jack Tan'
name2 = "Ga Xiao Duo"
name3 = '''This is a multi-line string. first line.
second line'''

if name.startswith('Ja'):
    print("Yes, name start with 'Ja'")

if 'a' in name:
    print('Yes, name contains the string "a"')

if name.find('ac') != -1:
    print('Yes, name contains the string "ac"')

deli = '_*_'
mylist = ['Brazil', 'Russia', 'India', 'China']

print(deli.join(mylist))

Output:

Yes, name start with 'Ja'
Yes, name contains the string "a"
Yes, name contains the string "ac"
Brazil_*_Russia_*_India_*_China

10 Resource

• Online Python: http://www.compileonline.com/execute_python_online.php

• Python Quick Start: http://www.tutorialspoint.com/python/python_lists.htm