Contents
How To Get The Length Of A List In Python? The len() function returns the number of items in a list.
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Introduction
There are multiple ways to get the length of a list in Python. The most common way is to use the len() function. This function returns the number of elements in a list.
For example, if we have a list of integers, we can get the length of the list like this:
“`
>>> my_list = [1, 2, 3]
>>> len(my_list)
3
“`
If we have a list of strings, we can get the length of the list like this:
“`
>>> my_list = [‘a’, ‘b’, ‘c’]
>>> len(my_list)
3
“`
The len() Function
The len() function returns the number of items in a list.
To use the len() function, put the name of the list in parentheses:
len(mylist)
The count() Function
If you want to get the length of a list in Python, you can use the count() function. The count() function returns the number of elements in a list.
To use the count() function, you need to pass the list as an argument.
The count() function is a built-in function in Python, so you don’t need to import any library to use it.
Here is an example of how to use the count() function:
“`python
list1 = [1, 2, 3, 4, 5]
count = list1.count(3)
print(count)
“`
The output of this code will be: 1
Looping Through A List
There are a few ways to get the length of a list in Python. The simplest way is to use the built-in function len(). This function returns the number of elements in a list.
If you want to loop through a list, you can use a for loop. This loop will go through each element in the list and count it as it goes. You can also use the len() function inside a for loop to get the length of a list.
Comparing List Lengths
Python’s len() function is handy for quickly finding the length of a list. But what if you want to know not just the length of a particular list, but also how that compares to the lengths of other lists? Here are three ways to do it.
The most direct way to compare list lengths is to use the built-in comparison operators:
>>> len(list1) == len(list2)
True
>>> len(list1) != len(list2)
False
>>> len(list1) < len(list2)
True
>>> len(list1) <= len(list2)
True
>>> len(list1) > len(list2)
False
Finding The Maximum Or Minimum Length Of A List
There are a couple ways to find the length of a list in Python. One way is to simply use the built-in function len(). This function will take in an iterable and return the number of items in that iterable.
For example, if we have a list called myList, we can find its length like this:
len(myList)
Another way to find the length of a list is to use a for loop. This is not as efficient as using len(), but it is helpful to know how to do this.
We can create a variable called count and set it equal to 0. Then, we can iterate through the list and increment count by 1 each time. In the end, count will hold the length of the list.
For example, if we have a list called myList, we can find its length like this:
count = 0
for item in myList:
count = count + 1
print(count)
Conclusion
In summary, to get the length of a list in Python you can use the len() function. Remember that the len() function will give you the number of elements in a list, rather than the number of characters in a string. If you want to know how many characters are in a string, you can use the len() function on that string.
