The Range ()() Function in Python

This updated guide examines The Range ()() Function in Python and organizes the essential facts, background, and practical takeaways in clear American English.

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The syntax of the range () function in Python

The range () function in Python has two types of syntax:

range(stop)

range(start, stop[, step])

The parameters of the range () function

The range () function has 3 parameters:

• start: integer begins, the string will start with this parameter. The default value is 0.
• stop: the integer ends, the string ends with this parameter.
• step: integer specifies the distance between the numbers inside the string. The default value is 1.

Return value from range ()

1. With range (stop) syntax:

• Returns a string starting from 0 tostop-1.
• Returns an empty string if the stop value is 0 or less than 0.

2. With range type syntax (start, stop [, step]):

• Without thestepparameter, the defaultstepwill be 1: the return value is a string starting atstartand ending atstop-1
• Ifstepequals 0, the exception exceptionValueErrorwill be raised.
• Ifstep, check if the parameters meet the constraint.
  • If yes, returns the string according to the formula, starting fromstart, the numbers separated bystep, the last number of the string will be< stop.
  • Otherwise returns an empty string.

Example 1: how does range () work?

print(list(range(0))) # s? d?ng range(stop) print(list(range(10))) # s? d?ng range(start, stop) print(list(range(1, 10)))

When you run the program, the output will be:

[] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] [1, 2, 3, 4, 5, 6, 7, 8, 9]

Example 2: Making an even number list between parameters passed by using range ()

start = 2 stop = 14 step = 2 print(list(range(start, stop, step)))

When you run the program, the output will be:

[2, 4, 6, 8, 10, 12]

Example 3: range () works with step being a negative number

start = 2 stop = -14 step = -2 print(list(range(start, stop, step))) print(list(range(start, 14, step)))

Return value:

[2, 0, -2, -4, -6, -8, -10, -12] []

See also: Python built-in functions