# import myfunc.returnfunction # print(myfunc.returnfunction.demo(10, 20)) # from myfunc import returnfunction # 从myfunc的文件夹中导入returnfunction # print(returnfunction.demo1(10, 20, 30)) # from myfunc import returnfunction as func # 从myfunc文件夹导入 # # returnfunction as func 起别名...
如果给定一个list或tuple,我们可以通过for循环来遍历这个list或tuple,这种遍历我们称为迭代(Iteration) 在Python中,迭代是通过for ... in来完成的,而很多语言比如C或者Java,迭代list是通过下标完成的 任何可迭代对象都可以作用于for循环,包括我们自定义的数据类型,只要符合迭代条件,就可以使用for循环 3、迭代器Iterator...
Help on built-infunctionprintinmodule builtins:print(...)print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,orto sys.stdout by default.Optional keyword arguments:file:afile-likeobject(stream);defaults to the current sys.stdout.sep:string inserted...
#示例见:#此示例示意用def语句来定义带有参数的函数#此函数名为mymax,有两个形式参数a,b 用于接收实参的传递#此函数计算两个参数的最大值并打印defmymax(a,b):print("a=",a)print("b=",b)ifa>b:print(a,"大于",b)else:print(a,"小于",b) mymax(100,200)#函数调用 练习: #3 写一个函数myadd...
@timeitdef slow_function: """一个故意运行缓慢的函数用于演示。""" total = 0 for i in range(10000000): total += i return totalresult = slow_function # 会打印运行耗时 输出: slow_function 执行耗时 0.5370 秒 适用场景:这种装饰器适用于对简单函数做基准测试,帮助你发现优化空间。
①在 Python 3.5 中,Python PEP 484 引入了类型注解(type hints),在 Python 3.6 中,PEP 526 又进一步引入了变量注解(Variable Annotations)。 ②具体的变量注解语法可以归纳为两点: 在声明变量时,变量的后面可以加一个冒号,后面再写上变量的类型,如 int、list 等等。
Optional keyword arguments: file: a file-like object (stream); defaults to the current sys.stdout. sep: string inserted between values, default a space. end: string appended after the last value, default a newline. flush: whether to forcibly flush the stream. Help on built-in function mkdi...
如果函数执行了return语句，那么函数的生命就结束了，return 语句后面的代码都不会执行。所以准确的说，函数里只能执行一次return语句，但可以写多条return语句。比如这样：def test_return(x): if x > 0: return x else: return 0 ...
(num_list)# Testing c function with pointer usedtestLib.__TestFuncAry(testArrayPtr,aryLen)foriinrange(aryLen):print(testArrayPtr[i])# Testing global parameter between c/pythongTestData=c_uint8.in_dll(testLib,'gTestData')print(gTestData)gTestData=77c_uint8.in_dll(testLib,'gTestData')...
if username in allowed_list and len(password) >=6: You had But you are asking a question about Python? Maybe you are not in the right place? Python is not a Microsoft product. Anyway, it seems that you have failed to indent theifstatement. Recall that indentation is significant in Pyth...