Mastering the Use of Python range() Function
Mastering the Use of Python range() Function
Mastering the Use of Python range() Function
Problem:The range() function in Python is a powerful tool for generating sequences of numbers, but understanding how to use it effectively can be challenging. Many Python programmers encounter difficulties when creating and manipulating ranges for various purposes.Solution:
• Function Syntax:
o Use range([start]. stop, [step]) to define a range.o start is optional, defaults to 0.
o stop specifies the end value (exclusive).
o step is optional, defaults to 1.
Examples:
Generating a sequence of numbers from O to 9 (exclusive) with a default step of 1:
for i in range(10) :
print(i)
Generating a sequence of numbers from 2 to 9 (exclusive) with a step of 2:
for i in range(2, 10, 2) :
print(i)
Using range() to create a list of numbers:
my_list = list(range(S)) print(my_list) # Creates a list [0, 1, 2, 3, 4]
Calculating the sum of even numbers from O to 10:
total = sum( range(0, 11, 2)) print(total) # Sums the even numbers in the range [0, 2 , 4 , 6, 8, 10]
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