Search for the first occurrence of the value 8, and return its position: thistuple = (1, 3, 7, 8, 7, 5, 4, 6, 8, 5)x = thistuple.index(8) print(x) Try it Yourself » Definition and UsageThe index() method finds the first occurrence of the specified value.The...
# throws error since 3 is absent in the tupleindex = numbers.index(3) print('Index of 3:', index) Run Code Output ValueError: tuple.index(x): x not in tuple In the above example, we have used theindex()method to find the index of an element that is not present in thenumberstupl...
__class_getitem__方法__class_getitem__是 Python 元组（tuple）的一个特殊方法（special method），...
Python has two built-in methods that you can use on tuples. MethodDescription count()Returns the number of times a specified value occurs in a tuple index()Searches the tuple for a specified value and returns the position of where it was found ...
方法(method):形式类似于函数,表示特定的行为或运算,必须通过类或对象来调用,后者用的更多一些。一般来说,方法直接作用在调用方法的对象上,函数必须指定要操作的对象;自定义类时,属于对象的成员方法的第一个参数(一般名为self)表示对象自己,属于类的方法第一个参数(一般名为cls)表示类自己,都不需要显式传递,是调...
元组| T.method() 元组:tuple() 关于元组的概念和基本用法不在这里赘述。 可以直接使用tuple()创建一个新的元组,或者,使用tuple()将一个对象转换成元组。 元组的特性是其中的元素不可修改。 这里涉及到的方法有两个:tuple.count(), tuple.index()。
__class_getitem__方法__class_getitem__是 Python 元组（tuple）的一个特殊方法（special method），...
thetuple=(1,3,5,7,9)#first methodprint("first method:")foriteminthetuple:print(item)#second methodprint("second method:")forvalueiniter(thetuple):print(value) 2 高级方法: thetuple=(1,3,5,7,9)#method oneprint("first method:")forindexinrange(len(thetuple)):print("index:",index,"...
Can I use index() with tuples or strings? Yes! Theindex()method works on any sequence type, includingtuplesandstrings: my_tuple=(1,2,3,2)print(my_tuple.index(2))# Output: 1text="hello world"print(text.index('o'))# Output: 4 ...
Index of an element/索引某元素位置You can use the index method to get the element index like this:mylist = ['one', 'two', 'three', 'four', 'five'] print(mylist.index('two')) mylist = ['one', 'two', 'three', 'four', 'five'] print(mylist.index('two'))...