Python 2.7.10 (default, Oct 14 2015, 16:09:02) [GCC 5.2.1 20151010] on linux2 Type "copyright", "credits" or "license()" for more information. >>> def function():定义函数 ptintf("run") >>> function() Traceback (most recent call last): File "<pyshell#3>", line 1, in <module> function() File "<pyshell#2>", line 2, in function ptintf("run") NameError: global name 'ptintf' is not defined >>> def fun(): print ("hello") >>> fun() hello >>> def fun2(name): print(name) >>> fun2(new) Traceback (most recent call last): File "<pyshell#11>", line 1, in <module> fun2(new) NameError: name 'new' is not defined >>> fun2("new") new >>> >>> >>> def fun3(num1,num2): return num1+num2函数的返回值 >>> print (fun3(1,2)) 3 >>> def fun4(name) SyntaxError: invalid syntax >>> def fun4(name): 'name is a param' print(name) >>> fun4("hello world") hello world >>> fun4._doc_函数的注释文档 Traceback (most recent call last): File "<pyshell#25>", line 1, in <module> fun4._doc_ AttributeError: 'function' object has no attribute '_doc_' >>> help(fun4) Help on function fun4 in module __main__: fun4(name) name is a param >>> def fun5(*param) SyntaxError: invalid syntax >>> def fun5(*param): print ("%d",len(param)) print (param) >>> fun5(1,2,3,4) ('%d', 4) (1, 2, 3, 4) >>> def fun5(*param,par): print ("%d",len(param)) print (param) SyntaxError: invalid syntax >>> >>> def fun6(*param,par):函数的收集参数 print ("%d",len(param)) print (param) SyntaxError: invalid syntax >>> def fun7(*param,name): SyntaxError: invalid syntax >>> def fun8(*pa , name1): SyntaxError: invalid syntax >>>
Python 2.7.10 (default, Oct 14 2015, 16:09:02) [GCC 5.2.1 20151010] on linux2Type "copyright", "credits" or "license()" for more information.>>> def function():ptintf("run")
>>> function()
Traceback (most recent call last): File "<pyshell#3>", line 1, in <module> function() File "<pyshell#2>", line 2, in function ptintf("run")NameError: global name 'ptintf' is not defined>>> def fun():print ("hello")
>>> fun()hello>>> def fun2(name):print(name)
>>> fun2(new)
Traceback (most recent call last): File "<pyshell#11>", line 1, in <module> fun2(new)NameError: name 'new' is not defined>>> fun2("new")new>>> >>> >>> def fun3(num1,num2):return num1+num2
>>> print (fun3(1,2))3>>> def fun4(name)SyntaxError: invalid syntax>>> def fun4(name):'name is a param'print(name)
>>> fun4("hello world")hello world>>> fun4._doc_
Traceback (most recent call last): File "<pyshell#25>", line 1, in <module> fun4._doc_AttributeError: 'function' object has no attribute '_doc_'>>> help(fun4)Help on function fun4 in module __main__:
fun4(name) name is a param
>>> def fun5(*param)SyntaxError: invalid syntax>>> def fun5(*param):print ("%d",len(param))print (param)
>>> fun5(1,2,3,4)('%d', 4)(1, 2, 3, 4)>>> def fun5(*param,par):print ("%d",len(param))print (param)SyntaxError: invalid syntax>>> >>> def fun6(*param,par):print ("%d",len(param))print (param)SyntaxError: invalid syntax>>> def fun7(*param,name):SyntaxError: invalid syntax>>> def fun8(*pa , name1):SyntaxError: invalid syntax>>>