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Python: Convert an integer to binary keep leading zeros

Python Basic: Exercise-140 with Solution

Write a Python program to convert an integer to binary keep leading zeros.

Converting an integer to an n-bit binary number results in its binary representation containing leading zeros up to length n. For example, to convert the integer 5 to a 6-bit binary results in 000101.
format(num, name) function with name as "0nb" to convert an integer num to a binary string with leading zeros up to length n.

Sample data : x=12
Expected output : 00001100
0000001100

Sample Solution:

Python Code:

x = 12
print(format(x, '08b'))
print(format(x, '010b'))

Sample Output: 

00001100
0000001100

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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