You can access tuple items by referring to the index number, inside square brackets:ExampleGet your own Python Server Print the second item in the tuple: thistuple = ("apple", "banana", "cherry") print(thistuple
for element in my_list: #access elements one by one print(element) print(my_list) #access all elements print(my_list[3]) #access index 3 element print(my_list[0:2]) #access elements from 0 to 1 and exclude 2 print(my_list[::-1]) #access elements in reverse 其他功能 在处理列表...
my_tuple=(1,'apple',3.14)first_element=my_tuple[0]# 1second_element=my_tuple[1]# 'apple' 切片操作也可以用于获取元组的一部分: slice_of_tuple=my_tuple[1:3]# ('apple', 3.14) 2.3 元组的长度 要获取元组的元素个数,可以使用内置的 len() 函数: length=len(my_tuple)# 3 2.4 元组的遍历 ...
print d.get('monkey','N/A')# Get an elementwithadefault;prints"N/A"print d.get('fish','N/A')# Get an elementwithadefault;prints"wet"del d['fish']# 从字典中移除对 print d.get('fish','N/A')#"fish"不再是key了;prints"N/A"#循环Loops:在字典中,用键来迭代更加容易。 d={'p...
Chrome("chromedriver.exe")bot.get('http://www.google.com')search=bot.find_element_by_name('...
A Python® container is typically a sequence type (list or tuple) or a mapping type (dict). In Python, use square brackets [] or the operator.getitem function to access an element in the container. Scalar string arguments can be used to index into the container. ...
You have seen that an element in a list can be any sort of object. That includes another list. A list can contain sublists, which in turn can contain sublists themselves, and so on to arbitrary depth.Consider this (admittedly contrived) example:...
Let's implement a naive function to get the middle element of a list:def get_middle(some_list): mid_index = round(len(some_list) / 2) return some_list[mid_index - 1]Python 3.x:>>> get_middle([1]) # looks good 1 >>> get_middle([1,2,3]) # looks good 2 >>> get_...
#access elementsmy_tuple2 = (1, 2, 3,'new') for x in my_tuple2:print(x) # prints all the elementsin my_tuple2print(my_tuple2)print(my_tuple2[0]) #1st elementprint(my_tuple2[:]) #all elementsprint(my_tuple2[3][1]) #this returns the 2nd character of the element atindex ...
(element1, element2, ... , elementn) 从存储内容上看,元组可以存储整数、实数、字符串、列表、元组等任何类型的数据,并且在同一个元组中,元素的类型可以不同,在这个元组中,有多种类型的数据,包括整形、字符串、列表、元组。例如: ("test.com.cn",1,[2,'a'],("abc",3.0)) ...