len()是python中的内置函数。 您可以使用len()获得给定字符串，数组，列表，元组，字典等的长度。

语法：

len(value)

参数：

value：您想要的长度的给定值。

返回值

将返回一个整数值，即给定的字符串，数组，列表或集合的长度。

示例1：如何找到给定字符串的长度？

# testing len() str1 = "Welcome to  Guru99 Python Tutorials"print("The length of the string  is :", len(str1))

输出

The length of the string  is : 35

示例2：如何在python中查找列表的长度？

# to find the length of the listlist1 = ["Tim","Charlie","Tiffany","Robert"]print("The length of the list is", len(list1))

输出

The length of the list is 4

示例3：如何在python中查找元组的长度

# to find the length of the tupleTup = ('Jan','feb','march')print("The length of the tuple is", len(Tup))

输出

The length of the tuple is 3

示例4：如何在Python中查找字典的长度？

# to find the length of the DictionaryDict = {'Tim': 18,'Charlie':12,'Tiffany':22,'Robert':25}print("The length of the Dictionary is", len(Dict))

输出

The length of the Dictionary is 4

示例5：如何在python中查找数组的长度

# to find the length of the arrayarr1 = ['Tim','Charlie','Tiffany','Robert']print("The length of the Array is", len(arr1))

输出

The length of the Array is 4