In this tutorial, I will help you learn how to split a number into digits using Python. As a Python developer, I encountered a situation to split numbers into digits while working with the individual digits of a number. Let’s get into the various methods that you can use to achieve this with detailed examples.
Split a Number into Digits in Python
Let’s consider a real-life scenario. Suppose you have a customer database for your e-commerce store in the United States. Each customer record includes a phone number stored as an integer. However, you realize that you need to process each digit of the phone number separately for a specific feature you’re implementing.
For example, you may have a phone number like 2125551234. Your goal is to split this number into a list of individual digits: [2, 1, 2, 5, 5, 5, 1, 2, 3, 4].
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Approach 1: Convert the Number to a String
One simple approach to split a number into digits is to convert the number to a string and then access each character individually. Here’s how you can do it:
phone_number = 2125551234
digit_list = [int(digit) for digit in str(phone_number)]
print(digit_list)Output:
[2, 1, 2, 5, 5, 5, 1, 2, 3, 4]I have executed the above example code and added the screenshot below.
In this example, we first convert the phone_number to a string using the str() function. Then, we use a list comprehension to iterate over each character of the string and convert it back to an integer using int(). The resulting list digit_list contains the individual digits of the phone number.
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Approach 2: Use the Modulo Operator and Floor Division
Another approach to split a number into digits is by using the modulo operator (%) and floor division (//). This method repeatedly divides the number by 10 and extracts the remainder as the digit. Here’s an example:
def split_number(number):
digits = []
while number > 0:
digit = number % 10
digits.insert(0, digit)
number //= 10
return digits
zip_code = 10001
digit_list = split_number(zip_code)
print(digit_list)Output:
[1, 0, 0, 0, 1]I have executed the above example code and added the screenshot below.
In this approach, we define a function called split_number() that takes a number as input. We initialize an empty list called digits to store the individual digits.
Inside the function, we start a loop that continues as long as number is greater than 0. In each iteration, we use the modulo operator to extract the rightmost digit by calculating number % 10. We then insert this digit at the beginning of the digits list using the insert() method with index 0.
Next, we update the number by performing floor division (//) by 10, effectively removing the rightmost digit. The loop continues until all digits have been processed. Finally, we return the digits list containing the individual digits of the number.
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Split Numbers with a Specific Number of Digits
In some cases, you may need to split a number into groups of digits with a specific length. For example, splitting a credit card number into groups of four digits. You can achieve this using list comprehension and string slicing:
credit_card = 1234567890123456
group_size = 4
digit_groups = [int(str(credit_card)[i:i+group_size]) for i in range(0, len(str(credit_card)), group_size)]
print(digit_groups)Output:
[1234, 5678, 9012, 3456]I have executed the above example code and added the screenshot below.
In this example, we have a credit_card number and a group_size that determines the number of digits in each group. We convert the credit card number to a string and use list comprehension to slice the string into groups of group_size digits. The range() function is used to generate the starting indices for each group, incrementing group_size in each iteration. We convert each group back to an integer and store them in the digit_groups list.
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Conclusion
In this tutorial, I have explained how to split a number into digits using Python. I explored two approaches to accomplish this task: converting the number to a string and using the modulo operator with floor division. We also saw how to split numbers with a specific number of digits.
You may also like to read:
- How to Use the arange() Function in Python?
- How to Use the Python Pass Function?
- How to Use the trim() Function in Python?
I am Bijay Kumar, a Microsoft MVP in SharePoint. Apart from SharePoint, I started working on Python, Machine learning, and artificial intelligence for the last 5 years. During this time I got expertise in various Python libraries also like Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc… for various clients in the United States, Canada, the United Kingdom, Australia, New Zealand, etc. Check out my profile.
