printing bit representation of numbers in python
PythonPython Problem Overview
I want to print the bit representation of numbers onto console, so that I can see all operations that are being done on bits itself.
How can I possibly do it in python?
Python Solutions
Solution 1 - Python
This kind of thing?
>>> ord('a')
97
>>> hex(ord('a'))
'0x61'
>>> bin(ord('a'))
'0b1100001'
Solution 2 - Python
In Python 2.6+:
print bin(123)
Results in:
0b1111011
In python 2.x
>>> binary = lambda n: n>0 and [n&1]+binary(n>>1) or []
>>> binary(123)
[1, 1, 0, 1, 1, 1, 1]
Note, example taken from: "Mark Dufour"
Solution 3 - Python
From Python 2.6 - with the string.format method:
"{0:b}".format(0x1234)
in particular, you might like to use padding, so that multiple prints of different numbers still line up:
"{0:16b}".format(0x1234)
and to have left padding with leading 0s rather than spaces:
"{0:016b}".format(0x1234)
From Python 3.6 - with f-strings:
The same three examples, with f-strings, would be:
f"{0x1234:b}"
f"{0x1234:16b}"
f"{0x1234:016b}"
Solution 4 - Python
Solution 5 - Python
Slightly off-topic, but might be helpful. For better user-friendly printing I would use custom print function, define representation characters and group spacing for better readability. Here is an example function, it takes a list/array and the group width:
def bprint(A, grp):
for x in A:
brp = "{:08b}".format(x)
L=[]
for i,b in enumerate(brp):
if b=="1":
L.append("k")
else:
L.append("-")
if (i+1)%grp ==0 :
L.append(" ")
print "".join(L)
#run
A = [0,1,2,127,128,255]
bprint (A,4)
Output:
---- ----
---- ---k
---- --k-
-kkk kkkk
k--- ----
kkkk kkkk