This document provides instructions for installing Python and IPython on different Linux distributions like Debian, Fedora, Gentoo, and Ubuntu. It also demonstrates various Python concepts like declaring variables, whitespace, comments, strings, input/output, conditionals, functions, lists, dictionaries, loops, and classes.

1. 大家一起學python

2. 環境安裝
Debian版本的安装命令如下：
su – aptitude install ipython python-setuptools
Fedora版本的安装命令如下：
su – yum install ipython python-setuptools-devel
Gentoo版本的安装命令如下：
su – emerge ipython
Ubuntu版本的安装命令如下：
sudo apt-get install ipython python-setuptools

3. 從軟體源安裝
來源:https://github.com/ipython/ipython/downloads
解壓縮:tar xzf ipython-<version>.tar.gz
使用git:git clone https://github.com/ipython/ipython.git
進入ipython目錄:cd ipython
安裝指令:sudo setup.py install

4. 宣告變數
my_int = 7
my_float = 1.23
my_bool = True
my_string = “Hello!”

5. Whitespace
def spam():
eggs = 12
return eggs
print spam()
Vim 縮排設定:vim ~/.vimrc
set sw=4
set ts=4
filetype indent on
autocmd FileType python setlocal et sta sw=4 sts=4
參考:
http://linux-wiki.cn/wiki/Vim%E4%BB%A3%E7%A0%81%E7%BC%A9%E8%BF%9B%E8%AE%BE%E7%BD%AE

6. Comments
#Hello
""""Hellowbyebye"""

7. String
my_string = “Hello”
String_len = len(my_string) // 5
my_string.lower() //”hello”
my_string. upper() //”HELLO”
str(10) // “10”
+
"Let's not go to %s. 'Tis a silly %s." % (str1, str2)

8. 輸入
my_input = int(raw_input(“input message:"))

9. Conditionals
EX:
if answer > 5:
return 1
elif answer < 5:
return -1
else:
return 0

10. function
Def function_name (argument[, argument]):
#Do

11. Lists
EX:
numbers = [5, 6, 7, 8]
numbers[0] = 5
len(numbers) // 4
numbers[start: end: step]
numbers.append(9)

12. Dictionaries
EX:
d = {'key1' : 1, 'key2' : 2, 'key3' : 3}
d['key1' ] = 1
d['key4’ ] = 4
d.remove('key3' )

13. Loop
EX:
while condition:
#Do
else:
#
for variable in list_name: for i in range():
# Do #Do

14. Class
class CLASS_NAME(object):
def __init__(self, a1, a2, a3)
self.a1 = a1
self.a2 = a2
self.a3 = a3
My_class = CLASS_NAME(a1,a2,a3)