python实例学习（一）

1.Python ASCII码与字符相互转换

#!/usr/bin/python3
# _*_ coding: UTF-8 _*_

str=input("Please input a char:")
num=input("Please input a ASCII:")

print('char ASCII:',ord(str))
print('ASCII char:',chr(num))

执行以上代码输出结果为：

Please input a char:'w'
Please input a ASCII:12
('char ASCII:', 119)
('ASCII char:', '\x0c')

2.Python 文件 IO

以下代码演示了Python基本的文件操作，包括 open，read，write：

#Write a file
with open("test.txt","wt") as out_file:
	out_file.write("a b c d e")
#Read a file

with open("test.txt","rt") as in_file:
	text=in_file.read()

print(text)

执行以上代码输出结果为：

a b c d e