Example 1: Count Number of Digits in an Integer using while loopOutput Show
Number of digits: 4 In this program, the while loop is iterated until the test expression
Example 2: Using inbuilt methodsOutput 6 In the above example, we first convert the integer value into string by using This is a Python Program to count the number of digits in a number. Problem Description The program takes the number and prints the number of digits in the number. Problem Solution 1. Take the value of the integer and store in a variable. Program/Source Code Here is source code of the Python Program to count the number of digits in a number. The program output is also shown below. Program Explanation 1. User must first enter the value of the integer and store it in a variable. Runtime Test Cases Case 1: Enter number:123 The number of digits in the number are: 3 Case 2: Enter number:1892 The number of digits in the number are: 4 Sanfoundry Global Education & Learning Series – Python Programs. To practice all Python programs, here is complete set of 150+ Python Problems and Solutions. Next Steps:
 Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn. Subscribe to his free Masterclasses at Youtube & technical discussions at Telegram SanfoundryClasses. The count() method is one of the inbuilt functions in Python. As the name implies, it returns the number of times a specified value appears in a string or a list. In real-time, we deal with statistical functions and financial functions where the number of arguments contains numbers and the number of cells contains numbers too. Hence, the count method helps us immensely. This method is also used to count numbers in the given set of arrays. There are two types of methods for ‘count’ in Python. They are as follows: The count () is used to count the number of times a substring occurs in each string. A single parameter (substring value) is quite enough for execution, optionally the other two values are also available. string.count(value, start,
end) or string.count(value) Value - This is the substring whose count in Python is to be found. This can be a single character or a substring, which needs to be searched for in the given string. Start (Optional) - This should be an integer, which is the index value to start the search in the given string. By default, it starts from 0, when the value is not given. End (Optional) - This should be an
integer, which is the index value to end the search. By default, it is the end of the string. When the end value is not given, it will find values until the end of the string or list. The count in Python method returns a number as a return value. The integer value is the return value. When the count in Python returns 0, then it means that the value is not found in the list or string. Example 1:Code 1:# this line for declaring a variable and its value myText = "I love Paris, Paris is my favorite tourist destination" # this line for calling the count method numofCounts = myText.count("Paris") # this line for print output print("{} number of times".format(numofCounts)) # format is the inbuilt function to use join the values. Output:2 number of times In the above example, the count method will search for the word “Paris'' in myText. It will return 2 as an integer value since the word Paris occurs two times in the string. The variable ‘numofCounts’ will get the return value and display the result. Example 2:Code 2:# this line for declaring the variable and its value myText = "I love Paris, Paris is my favorite tourist destination" # this line for calling the count method with start and end value numofCounts = myText.count("Paris",8,20) # 8 is start value , 20 is end value # this line for print output print("{} number of times".format(numofCounts)) # format is the inbuilt function to use join the values. Output1 number of times In the above example, the same count method searches for the word “Paris” from the specified index value. Here, the count method has two more parameters. The starting search point is the 8th index, and it ends the searching at the 20th index value of myText string (“aris, Paris is”). So, it returns only 1 time. PYTHON List Count() method:The count() method returns the number of elements that appear in the specified list. This method takes a single argument as input. It iterates the list and counts the number of instances that match it. Syntax:list.count(value) Parameters:Value—The value to be counted in Python. It can be of any type (String, number, list, etc.) Example 1:Code 3:# this line for declare variable and its value cities= ["Paris","London","New York"] # this line for calling count method numofCount =cities.count("Paris") # this is for test data Paris already Exist numofTestCount = cities.count("Rome") # this is for test data Rome not exist in list # this line for print output print("{} number of times".format(numofCount)) # one because paris exist in List print("{} number of times".format(numofTestCount)) # zero because Rome not exist in List Output1 number of times 0 number of times Note that in the above example, the print numofTestCount output is 0, as it received an invalid or non-existent parameter. Example 2:Count from even number list: Code 4:# this line for declaring the variable and its value evennumbers= [2,4,6,8,10,12,14,16,18,20,22] # this line for calling the count method numofEvens = evennumbers.count(4) print("{} number of times".format(numofEvens)) # format is the inbuilt function to use join the values. Output1 number of times You might have noticed that the output of print numofEvens was 1, though 2 appears at 12 and 20 in the list. It is because the list only counts the element which matches the data type and the value of the parameter passed. Example 3:Count from tuple Code 5:# this line for declare variable and its value cities = [('Paris',1),('London',2),('Rome',3)] # here we passing Tuple values numofCounts = cities.count(('London',2))# here we pass only one tuble value . if we pass more tuple values we will face Type Error print("{} number of times".format(numofCounts)) # format is the in-build function to use join the values. Output1 number of times In the above example, cities denote the list variable that holds a few tuple values. We can find the tuple value with the help of the count method in the list. The numofCounts variable displays 1 since the value was found one time. When we deal with the list count method, the error possibility in the count method is TypeError. When over 1 parameter is passed, it throws TypeError. Looking forward to making a move to the programming field? Take up the Python Training Course and begin your career as a professional Python programmer Conclusion:Count() is a Python built-in function that returns the number of times an object appears in a list. The count() method is one of Python's built-in functions. It returns the number of times a given value occurs in a string or a list, as the name implies. In real-time, we deal with statistical functions and financial functions where the number of arguments containing numbers, or the number of cells containing a number, will benefit from the count process. This approach can also be used to count the number of elements in an array. To become an expert in Python programming, join Simplilearn's python course. The basics of Python and how to apply it to real-world applications are covered in this Python training course. Data operations in Python, strings, conditional statements, error handling, shell scripting, web scraping, and the frequently used Python web system ‘Django’ are covered in the modules. Lesson-end tasks and assignments make up the curriculum, among other interesting learning methods. It is a 38-hour blended learning curriculum that includes 8 hours of self-paced online learning, 30 hours of instructor-led preparation, 20+ supported practices on all modules, 5 lesson-end information tests, and 1 real-life course-end project, and an industry-recognized course completion certificate. Have any questions for us? Leave them in the comments section of this article, and our experts will get back to you on the same, ASAP! How do you count digits in Python?Python Program to Count the Number of Digits in a Number. Take the value of the integer and store in a variable.. Using a while loop, get each digit of the number and increment the count each time a digit is obtained.. Print the number of digits in the given integer.. What does count () do in Python?The count() method returns the number of times a specified value appears in the string.
How do you count all values in Python?Len() Method
There is a built-in function called len() for getting the total number of items in a list, tuple, arrays, dictionary, etc.
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