注意:没有有默认值的参数要放在前面,否则报错 Python编写规范:给形参设置默认值的时候,参数(sex='男')等号两边不要有空格,即便不会报错 def showInfoDefault(name,age,sex='男'): print('姓名:'+name+',性别:'+sex+',年龄:'+age) showInfoDefault(name='赵信', age='18') 1. 2. 3. 输出: 姓名:...
In this section, you’ll learn how to do basic arithmetic, such as addition, subtraction, multiplication, and division, with numbers in Python. Along the way, you’ll learn some conventions for writing mathematical expressions in code.AdditionAddition is performed with the + operator:...
链接是:IdleX - IDLE Extensions for Python 2,解压 说明,如果谁喜欢用IDELX的话,就直接双击解压文件下的idlex文件就好,如下: 如果喜欢IDLEX的话,直接用就是了,以下的内容不需要再阅读,但是我不喜欢这个界面,所以在python3.7.2的基础上加了linenubers.py插件。 3,LineNumbers.py的位置 4,将这...
Python IDLE 添加行号 http://idlex.sourceforge.net/extensions.html解压后,将idlex/idlexlib/extensions文件夹下的LineNumbers.py和..._cfgBindings]linenumbers-show=True打开LineNumbers.py,注释掉config_extension_def,修改该文件的导入包(注意查看Python/Lib/idlelib文件夹下是否有 ...
In this tutorial, you'll learn what kinds of mistakes you might make when rounding numbers and how you can best manage or avoid them. It's a great place to start for the early-intermediate Python developer interested in using Python for finance, data sci
>>> import math Hit enter, and you're done. Now in order to use thesin()function, go to a new line and type: >>> math.sin(3.14159) Since3.14159is approximately the value ofπhence the answer would be near to zero. As you can see aftermath.sin(3.14159)statement, the answer returne...
Python - Keyword Arguments Python - Keyword-Only Arguments Python - Positional Arguments Python - Positional-Only Arguments Python - Arbitrary Arguments Python - Variables Scope Python - Function Annotations Python - Modules Python - Built in Functions Python Strings Python - Strings Python - Slicing ...
You can also find the maximum of two numbers using theternary operator. This operator allows you to write concise conditional expressions in a single line. This program uses the ternary operator to comparexandy. Ifxis greater than or equal toy,xis assigned tomax_value; otherwise,yis assigned ...
Python - Function Annotations Python - Modules Python - Built in Functions Python Strings Python - Strings Python - Slicing Strings Python - Modify Strings Python - String Concatenation Python - String Formatting Python - Escape Characters Python - String Methods Python - String Exercises Python Lists...
Adding Line Numbers to a Python Script : File Text « File « PythonPython File File Text Adding Line Numbers to a Python Script import fileinput for line in fileinput.input(inplace=1): line = line.rstrip() num = fileinput.lineno() print '%-40s # %2i' % (line, num) ...