What You'll Learn: In this tutorial, you'll discover how to convert a numeric string range like '4-9' into a list like [4, 5, 6, 7, 8, 9] in Python. This can be useful for working with ranges specified as strings.

Steps to Convert Numeric String Range to a List

1. Split the String: Use the hyphen as a delimiter to split the string.
2. Convert to Integers: Convert the split strings to integers.
3. Create a Range: Create a range using these integers.
4. Convert to List: Convert the range to a list.

Example Program

In this example, we read a string from the user and convert the given numeric string range to a list.

Example Code:

# Take a numeric string range
x = '4-9'
# Split the string by hyphen
a, b = x.split('-')
# Convert string splits into integers
a, b = int(a), int(b)
# Create a range from the given values
result = range(a, b + 1)
# Convert the range into list
result = list(result)
print(result)

Output: [4, 5, 6, 7, 8, 9]
 

What's Happening Here?

• We split the string x by the hyphen using split('-'), resulting in a and b.
• We convert these split strings to integers using int(a) and int(b).
• We create a range from a to b + 1 using range(a, b + 1).
• Finally, we convert the range to a list using list(result) and print it.

Reference Tutorials for the Above Program:

• Python List: Learn about list operations and methods.
• Python Range: Understand how to use the range() function.
• Python - Split String: Learn how to split strings in Python.
• Python - Convert String to Integer: Understand how to convert strings to integers.

Try It Yourself: Fun Exercises

1. Create Your Own Ranges:
   • Take a numeric string range like '10-15' and convert it to a list.
2. Dynamic Range Input:
   • Use the input() function to read a numeric string range from the user and convert it to a list.

Summary:

In this Python tutorial, we learned how to convert a given numeric string range into a list of numbers using string splitting, integer conversion, range creation, and list conversion. These techniques are useful for manipulating ranges specified as strings. Keep experimenting and have fun with Python!