Converting integer to binary in python

Question

In order to convert an integer to a binary  I have used this code     gt  gt  gt  bin 6     0b110    and when to erase the  0b   I use this     gt  gt  gt  bin 6  2      110    What can I do if I want to show 6 as 00000110 instead of 110

User · Answer

def int to bin num  fill       bin result           def int to binary number           nonlocal bin result         if number  gt  1              int to binary number    2          bin result   bin result   str number   2       int to binary num      return bin result zfill fill

User · Answer

even an easier way my num   6 print f  my num b

User · Answer

You can use just   quot  0 b  quot  format n   In my opinion this is the easiest way

User · Answer

Just use the format function  format 6   08b     The general form is   format  lt the integer gt     lt 0 gt  lt width of string gt  lt format specifier gt

User · Answer

gt  gt  gt    0 08b   format 6   00000110    Just to explain the parts of the formatting string       places a variable into a string 0 takes the variable at argument position 0   adds formatting options for this variable  otherwise it would represent decimal 6  08 formats the number to eight digits zero-padded on the left b converts the number to its binary representation   If you re using a version of Python 3 6 or above  you can also use f-strings    gt  gt  gt  f  6 08b    00000110

User · Answer

Assuming you want to parse the number of digits used to represent from a variable which is not always constant  a good way will be to use numpy binary   could be useful when you apply binary to power sets  import numpy as np np binary repr 6  width 8

User · Answer

A bit twiddling method      gt  gt  gt  bin8   lambda x      join reversed   str  x  gt  gt  i   amp  1  for i in range 8        gt  gt  gt  bin8 6   00000110   gt  gt  gt  bin8 -3   11111101

User · Answer

The best way is to specify the format   format a   b     returns the binary value of a in string format   To convert a binary string back to integer  use  int   function   int  110   2    returns integer value of binary string

User · Answer

numpy binary repr num  width None  has a magic width argument  Relevant examples from the documentation linked above     gt  gt  gt  np binary repr 3  width 4   0011        The two   s complement is returned when the input number is negative and width is specified    gt  gt  gt  np binary repr -3  width 5   11101

User · Answer

0    7   bin 6  2    -8     or  right side   bin 6  2    0      8 - len  right side      right side

User · Answer

or if you re not sure it should always be 8 digits  you can pass it as a parameter    gt  gt  gt    0 d     8  int bin 6  2      00000110

User · Answer

Going Old School always works  def intoBinary number   binarynumber    if  number  0       while  number gt  1           if  number  2  0               binarynumber binarynumber  0              number number 2         else              binarynumber binarynumber  1              number  number-1  2  else      binarynumber  0   return    join reversed binarynumber

User · Answer

Just another idea    gt  gt  gt  bin 6  2   zfill 8   00000110    Shorter way via string interpolation  Python 3 6      gt  gt  gt  f  6 08b    00000110

User · Answer

eumiro s answer is better  however I m just posting this for variety    gt  gt  gt    08d    int bin 6  2    00000110

[python] Converting integer to binary in python

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