‘) 例如: >>> a=' Hello World ' >>> a ' Hello World ' >>> a.strip() 'Hello World' >>> x='\t\r\npython...' >>> x '\t\r\npython' >>> x.strip() 'python' 2.rm删除序列是只要边(开头或结尾)上的字符在删除序列内,就删除掉。
commands >>> commands.getoutput('ls *.sh') 'install_zabbix.sh\nmanage_deploy.sh\nmysql_setup.sh\npython_manage_deploy.sh... >>> commands.getstatusoutput('ls *.sh') (0, 'install_zabbix.sh\nmanage_deploy.sh\nmysql_setup.sh\npython_manage_deploy.sh
time:2012-07-06 import sys; print("命令行参数是"); for i in sys.argv: print(i); print ('\n\nPython...desktop-desktop:~/shell_learn/python$ python mytest.py a b c d e f 命令行参数是 mytest.py a b c d e f ('\n\nPython
4516524144 id(age) 4516499824 2.4原始字符串 用r开头引起的字符串就是我们常用的原始字符串,放在里面的任何字符串都是表示它的原始含义,从此不需要转义 s = "hello \npython..." print(s) # 发生换行 hello python # 如何解决:1-使用转义字符 print("hello \\npython") hello \npython # 2-使用r包裹起来 print...(r"hello \npython") hello \npython 三、索引和切片 索引和切片是python中非常重要的一个概念,记住几点: 索引左边从0开始,右边从-1开始 切片语法:startstep
Out[146]: 1 In [147]: f.write('hello\nPython...In [156]: f.write('\npython...mamalianlianlianlian In [175]: f.write(b'Hello\nPython
You have access to the following tools:\n\nPython REPL: A Python shell....You have access to the following tools:\n\nPython REPL: A Python shell....You have access to the following tools:\n\nPython REPL: A Python shell....You have access to the following tools:\n\nPython REPL: A Python shell....You have access to the following tools:\n\nPython REPL: A Python shell.
import UserInfo import os import csv class Command(BaseCommand): help = '导入数据,以逗号分隔的csv文件,编码为UTF-8\npython
= 2: print("input like : \npython trans.py input.txt output.html\n" "python trans.py
world""" 3》三个单引号(或三个双引号)也可以表示跨行字符串,如: >>> s=''' ... hello ... python ... ''' >>> s '\nhello\npython
使用转义字符 \n 表示换行符 print('Hello World\nPython') 类似的常用转义字符还有 \t,表示一个制表符,相当于按下tab键的效果。
print(message) 6、字符串输出格式 通过Tab制表符(\t)和换行符(\n)输出实现格式设置 print("Python") print("\tPython") print("\nPython...") print("Languages:\nPython\nC\nJavaScript") print("Languages:\n\tPython\n\tC\n\tJavaScript") 跳过Tab
print ('I\'m learning\nPython.') print ('\\\n\\') print (1.23e-3) print 12.23e4 [root@localhost xiaoai
nHacking & Computer Security\r\n Hardware /DIY\r\nKids\r\nLEGO®\r\nLinux &BSD\r\nManga\r\nProgramming\r\nPython
. >>> print 'I\'mlearning\nPython.'
walker.extSums.values()), end=' ') print(sum(x['files'] for x in walker.extSums.values())) print('\nPython
种没有区别 s = '''hello python''' s = """hello python""" 以上2种没有区别 区别在于三引号可以定义多行字符串 2、转义和自然字符串 s = 'i like \npython
module 'sys' (built-in)> >>> sys.path.append('C:\Documents and Settings\Administrator\桌面\IronPython\Iro nPython
\n\n## 结论\n\nPython面向对象编程是Python编程中的重要组成部分,掌握了面向对象编程思想、类、对象、继承等相关概念和用法,可以帮助你编写更加模块化、可重用、易维护的Python代码。
转义字符\可以转义很多字符,如\n表示换行,\t表示制表符,字符\本身也要转义,所以\\表示的字符就是\ print('I\'m learning\nPython.')
print('I\'m learning\nPython.')
领取专属 10元无门槛券
手把手带您无忧上云