Python: Make an iterator that returns evenly spaced values starting with a specified number and step
Python Itertools: Exercise-4 with Solution
Write a Python program to construct an infinite iterator that returns evenly spaced values starting with a specified number and step.
Sample Solution:
Python Code:
import itertools as it
start = 10
step = 1
print("The starting number is ", start, "and step is ",step)
my_counter = it.count(start, step)
# Following loop will run for ever
print("The said function print never-ending items:")
for i in my_counter:
print(i)
Sample Output:
The starting number is 10 and step is 1 The said function print never-ending items: 10 11 12 13 14 15 16 17 18 19 20 .... 25869 .... 1
Python Code Editor:
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Previous: Write a Python program to generate the running maximum, minimum value of the elements of an iterable.
Next: Write a Python program to generate an infinite cycle of elements from an iterable.
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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