How to use the bin() function without 0b?
To use the bin() function without 0b in Python we have to remove the prefix. The prefix 0b is added by bin() to indicate a binary representation. To remove it, we can choose between one of the following options.
- slice notations
- string.replace()
- regex
slice notations
To remove the 0b prefix, use slice notations and slice the first two characters off.
# remove 0b prefix using slice notations
myInt = 5
myBin = bin(myInt)
print(myBin[2:])
The bin() function returns a prefix in the first two positions. [2:] returns the binary without the prefix.
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string.replace() method
To replace the prefix 0b, use the replace() method of string objects.
# remove 0b prefix using string.replace() method
myInt = 5
myBin = bin(myInt)
myBin = myBin.replace('0b', '')
print(myBin)
The prefix is replaced by an empty string and therefore removed from the binary representation.
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Regex
To remove the prefix 0b, use the sub() function of re - the regex module in Python.
# remove 0b prefix using regex
import re
myInt = 5
myBin = bin(myInt)
myBin = re.sub('0b', '', myBin)
print(myBin)
The 0b is replaced by an empty string and therefore removed from our binary representation.
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