Here is how to get the number of elements in a list in Python.
# Define a list my_list = [1, 2, 3, 4, 5] # Get the number of elements in the list num_elements = len(my_list) # Print the number of elements print(num_elements)
Output
5
Explanation
To get the number of elements in a list in Python, you can use the len() function. This function returns the number of elements in the list.
You can also use the count() method of the list to get the number of occurrences of a specific element in the list. This method returns the number of times the specified element appears in the list. Here is an example:# Define a list my_list = [1, 2, 3, 4, 5, 2, 3, 4, 5] # Get the number of occurrences of the number 2 in the list num_occurrences = my_list.count(2) # Print the number of occurrences print(num_occurrences)This will print 2 in the console, which is the number of times the number 2 appears in the my_list list.
Related HowTos
Flush the output of the print function
Prettyprint a JSON file
Create a dictionary with list comprehension
Select multiple columns in a Pandas dataframe
Profile a script
Reverse a string
Convert two lists into a dictionary
Convert an integer into a string
Generate random strings with upper case letters and digits
Extract extension from filename
Print to stderr in Python
Generate random integers between 0 and 9
Use a pythonic way to create a long multi-line string
Measure elapsed time in Python
Install specific package versions with pip
Read from stdin (standard input)
Get the class name of an instance
Check if a string is empty
Pad zeroes to a string
Delete an element from a dictionary
Check if a string is a float
Count the occurrences of an item in a list
Remove an element from a list by index
Use static methods
Remove a trailing newline
Print literal curly-brace characters in a string and also use .format on it
Exit/deactivate a virtualenv
Determine the type of an object
Limit floats to two decimal points
Know if an object has an attribute
Select an item from a list randomly
Read a file line-by-line into a list
Call a function of a module by using its name
Print without a newline or space
Sort a list of dictionaries by a value of the dictionary
Remove a key from dictionary
Rename column names with Pandas
Lowercase a string
Upgrade all Python packages with pip
Get a substring of a string
Get the last element of a list
Parse a string to a float or integer
Convert a string into datetime format
Access environment variable values
Print coloured text on the terminal
Find current directory of a file
Change the size of figures drawn with Matplotlib
Manually raise an exception
Delete a file or folder
Split a list into evenly sized parts
Select rows from a DataFrame based on column values with Pandas
Install pip on Windows
Check if a given key already exists in a dictionary
Iterate over rows in a DataFrame for Pandas
Make function decorators and chain them together
Pass a variable by reference
Make a time delay
Convert bytes to a string
Copy a file
Concatenate two lists
Add new keys to a dictionary
Catch multiple exceptions in a single 'except' block
Check if a list is empty
Get the current time
Sort a dictionary by value
Use global variables in a function
List all files of a directory
Iterate over dictionaries using for loops
Check if a string contains a substring
Find the index of an item in a list
Understand how slice notation works
Make a flat list out of a list of lists
Accesses the index in for loops
Safely create a nested directory
Merge two dictionaries in a single expression
Check whether a file exists without exceptions
Convert a dictionary into a list
Convert a list into a dictionary
Duplicate a file
Append text in a text file
Use for loops
Deploy a web app to Heroku
Schedule a Python script for execution at a specific time every day
Store Python passwords securely on Windows, Mac, and Linux
Do dictionary comprehension
Do list comprehension
Create a virtual environment
Create a new file
Merge two lists
Extract items from two different lists into one list
Check if a text file is empty
Randomly select an item from a list
Generate a random integer
Break a while loop
Create a pandas DataFrame from a dictionary
Create a pandas DataFrame from a list
Get the last item of a list
Delete a column from a pandas dataframe
Access a column of a pandas dataframe
Create a class
Make a webpage request
Get the first two characters of a string
Loop through two lists at the same time
Prettyprint a JSON file
Create a dictionary with list comprehension
Select multiple columns in a Pandas dataframe
Profile a script
Reverse a string
Convert two lists into a dictionary
Convert an integer into a string
Generate random strings with upper case letters and digits
Extract extension from filename
Print to stderr in Python
Generate random integers between 0 and 9
Use a pythonic way to create a long multi-line string
Measure elapsed time in Python
Install specific package versions with pip
Read from stdin (standard input)
Get the class name of an instance
Check if a string is empty
Pad zeroes to a string
Delete an element from a dictionary
Check if a string is a float
Count the occurrences of an item in a list
Remove an element from a list by index
Use static methods
Remove a trailing newline
Print literal curly-brace characters in a string and also use .format on it
Exit/deactivate a virtualenv
Determine the type of an object
Limit floats to two decimal points
Know if an object has an attribute
Select an item from a list randomly
Read a file line-by-line into a list
Call a function of a module by using its name
Print without a newline or space
Sort a list of dictionaries by a value of the dictionary
Remove a key from dictionary
Rename column names with Pandas
Lowercase a string
Upgrade all Python packages with pip
Get a substring of a string
Get the last element of a list
Parse a string to a float or integer
Convert a string into datetime format
Access environment variable values
Print coloured text on the terminal
Find current directory of a file
Change the size of figures drawn with Matplotlib
Manually raise an exception
Delete a file or folder
Split a list into evenly sized parts
Select rows from a DataFrame based on column values with Pandas
Install pip on Windows
Check if a given key already exists in a dictionary
Iterate over rows in a DataFrame for Pandas
Make function decorators and chain them together
Pass a variable by reference
Make a time delay
Convert bytes to a string
Copy a file
Concatenate two lists
Add new keys to a dictionary
Catch multiple exceptions in a single 'except' block
Check if a list is empty
Get the current time
Sort a dictionary by value
Use global variables in a function
List all files of a directory
Iterate over dictionaries using for loops
Check if a string contains a substring
Find the index of an item in a list
Understand how slice notation works
Make a flat list out of a list of lists
Accesses the index in for loops
Safely create a nested directory
Merge two dictionaries in a single expression
Check whether a file exists without exceptions
Convert a dictionary into a list
Convert a list into a dictionary
Duplicate a file
Append text in a text file
Use for loops
Deploy a web app to Heroku
Schedule a Python script for execution at a specific time every day
Store Python passwords securely on Windows, Mac, and Linux
Do dictionary comprehension
Do list comprehension
Create a virtual environment
Create a new file
Merge two lists
Extract items from two different lists into one list
Check if a text file is empty
Randomly select an item from a list
Generate a random integer
Break a while loop
Create a pandas DataFrame from a dictionary
Create a pandas DataFrame from a list
Get the last item of a list
Delete a column from a pandas dataframe
Access a column of a pandas dataframe
Create a class
Make a webpage request
Get the first two characters of a string
Loop through two lists at the same time
Recommended Course
Learn Flask development and learn to build cool apps with our premium Python course on Udemy.
