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1. 格式:for variable1 in tuple: for variable2 in variable1: 使用variable 例如:tu1 = ((1,2,3,),(4,5,6,),(7,8,9,),) for i in tu1: for j in i: print(j) #输出的结果j就是元祖中小元祖中的元素 2. 格式:for varialbe1,variable2,... in tuple: 直接使用variable1,variable2,...
运行文件居然抛异常了,提示“sum = sum + c” 这一行中有TypeError,意思是只能用tuple和tuple相加,不能用int和tuple相加。 what? a和b相加是个int数据,再和c相加,这里明明是int和int相加,怎么提示是int和tuple相加, “sum = sum + c” 这一行中c是int无疑了,难道这里sum是个tuple?改下程序,打印add()...
>>>dir(str)['__add__','__class__','__contains__','__delattr__','__doc__','__eq__','__format__','__ge__','__getattribute__','__getitem__','__getnewargs__','__getslice__','__gt__','__hash__','__init__','__le__','__len__','__lt__','__mod_...
Here’s a summary of when it would be appropriate to use a list instead of a tuple: Mutable collections: When you need to add, remove, or change elements in the collection. Dynamic size: When the collection’s size might change during the code’s execution. Homogeneous data: When you ...
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from typing import Any, Tuple # 变量可以为任何类型,包括None a: Any = None # Used as an escape hatch l: Tuple[(int, Any, str)] = (1, None, "test") 3.7 Optional Optional常用语函数传参,代表该参数可无。 from typing import Optional # arg参数可无,若有则声明为int型 def foo(arg: Op...
*args参数:可接受任意个位置参数,当函数调用时,所有未使用(未匹配)的位置参数会在函数内自动组装进一个tuple对象中,此tuple对象会赋值给变量名args。 **kwargs参数:可接受任意个关键字参数,当函数调用时,所有未使用(未匹配)的关键字参数会在函数内组装进一个dict对象中,此dict对象会赋值给变量名kwargs。 同时使...
with no environment variable changes, most noteworthy, you do not have to mess withPYTHONPATHat all for Nuitka. You just execute thenuitkaandnuitka-runscripts directly without any changes to the environment. You may want to add thebindirectory to yourPATHfor your convenience, but that step is...
1.2.3: Tuples 元组 元组是不可变的序列,通常用于存储异构数据。 Tuples are immutable sequences typically used to store heterogeneous data. 查看元组的最佳方式是将其作为一个由多个不同部分组成的单个对象。 The best way to view tuples is as a single object that consists of several different parts....