日期：2017-12-30 作者：秋的懵懂
# coding=utf-8
# 打印测试
print('_______________________________________________')
print("打印测试：")
print('hello world!')
print('_______________________________________________')
# 单行注释
'''
多行注释
'''
"""
多行注释
"""
# 变量
print('\n\n_______________________________________________')
print("变量：")
message = 'hello python world'
print(message)
message = 'hello python crash course world!'
print(message)
print('_______________________________________________')
# 修改大小写
print('\n\n_______________________________________________')
print("修改大小写：")
name = 'adc lovelace'
print('开头字母大写：', name.title())
print('全部转成大写：', name.upper())
print('全部转成小写：', name.lower())
print('_______________________________________________')
# 合并（拼接）字符串
print('\n\n_______________________________________________')
print("合并（拼接）字符串：")
first_name = '文应'
last_name = '魏'
full_name = last_name + first_name
print(full_name)
print('_______________________________________________')
# 制表符和换行符（添加换行）
print('\n\n_______________________________________________')
print("制表符和换行符（添加换行）：")
print('\\t作为table键:' + '\t' + 'table')
print('\\n作为Enter键:' + '\n' + 'line')
print('_______________________________________________')
# 删除空白
print('\n\n_______________________________________________')
print("删除空白(直接python输入才有显示!!!)：")
favorite_language = ' python '
favorite_language
# 删除后面(rear)空白
favorite_language = favorite_language.rstrip()
favorite_language
# 删除前面空白
favorite_language = favorite_language.lstrip()
favorite_language
favorite_language = ' python '
# 删除前后空白
favorite_language = favorite_language.strip()
favorite_language
print('_______________________________________________')
# 数字
print('\n\n_______________________________________________')
print("数字：")
# 加减乘除
data = 1 + (1 - 1) + (2 * 2) + (2 / 1)
# 下面两个都输出1.5,Python2中前者输出1
print(data)
data = 3 / 2
print(data)
data = 3.0 / 2
print(data)
# 2的3次方
data = 2 ** 3
print(data)
print('_______________________________________________')
# 函数str()
print('\n\n_______________________________________________')
print("数str():")
age = 23
message = 'Happy ' + str(23) + 'rd Birthday!'
print(message)
print('_______________________________________________')
# 显示python的一些名言
print('\n\n_______________________________________________')
print("Python之禅:")
import this
print('_______________________________________________')
