Getting a specific bit value in a byte string
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Published on 2010-04-07T10:06:30Z
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2010/04/07
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There is a byte at a specific index in a byte string which represents eight flags; one flag per bit in the byte. If a flag is set, its corresponding bit is 1, otherwise its 0. For example, if I've got
b'\x21'
the flags would be
0001 0101 # Three flags are set at indexes 3, 5 and 7
# and the others are not set
What would be the best way to get each bit value in that byte, so I know whether a particular flag is set or not? (Preferably using bitwise operations)
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