In my code there is a line:
charInBinary = str(bin(ord(MESSAGE[i])))[2:]
What is [2:] need for?
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If the output starts with `0b`, and you don't want that, you strip it off. – Mad Physicist May 07 '22 at 16:05
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2You should know it if you wrote the code. – VRComp May 07 '22 at 16:05
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Have you tried it without? Should be self-explanatory. – Sören May 07 '22 at 16:06
3 Answers
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The [2: ] is slice notation, and since that's being performed on a str, it means that you're retrieving all of the characters of the string starting at index 2. In this case, that's getting rid of 0b.
fireshadow52
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bin returns a string with a leading 0b prefix. The [2:] is snipping off the prefix, leaving only the binary digits
pat
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It's a simple question.
Without [2:] your output starts with 0b, So for removing this we use this [2:]
charInBinary = str(bin(ord(MESSAGE[i])))
print(charInBinary) # 0b111111
# WIth [2:]
charInBinary = str(bin(ord(MESSAGE[i])))[2:]
print(charInBinary) # 111111
codester_09
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