python 示例

Python是關(guān)鍵字 (Python is keyword)

is is a keyword (case-sensitive) in python, it is used to check whether two objects are the same objects or not.

is是python中的關(guān)鍵字(區(qū)分大小寫(xiě))，用于檢查兩個(gè)對(duì)象是否相同。

Note: If two variables refer to the same objects then they are the same objects else objects are not the same objects even they contain the same value.

注意：如果兩個(gè)變量引用相同的對(duì)象，則它們是相同的對(duì)象，否則即使它們包含相同的值，對(duì)象也不是相同的對(duì)象。

Syntax of is keyword

is關(guān)鍵字的語(yǔ)法

if (object1 is object2):statement(s)

Example:

例：

Input:# create a listlist1 = [10, 20, 30, 40, 50]# creating list2 with list1list2 = list1# conditionif (list1 is list2):print("Yes")else:print("No")Output:Yes

is關(guān)鍵字的Python示例 (Python examples of is keyword)

Example 1: Use of is keyword with different objects having same values.

示例1：將is關(guān)鍵字與具有相同值的不同對(duì)象一起使用。

# python code to demonstrate example of # is keywordlist1 = [10, 20, 30, 40, 50] list2 = [10, 20, 30, 40, 50]# checking if (list1 is list2):print("list1 and list2 are the same objects") else:print("list1 and list2 are not the same objects")

Output

輸出量

list1 and list2 are not the same objects

Example 2: Use of is keyword with the same objects.

示例2：將is關(guān)鍵字與相同的對(duì)象一起使用。

# python code to demonstrate example of # is keyword# create a list list1 = [10, 20, 30, 40, 50]# creating list2 with list1 list2 = list1# checking if (list1 is list2):print("list1 and list2 are the same objects") else:print("list1 and list2 are not the same objects")

Output

輸出量

list1 and list2 are the same objects

翻譯自: https://www.includehelp.com/python/is-keyword-with-example.aspx

python 示例

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