the use of boolean logic "and" and bitwise operator "&"

Question

sorry about this basic question, I just a beginner in Python programming. From my undertsanding, & and "and" are the same things, and "&" is just a shorhand for "and" so if I use Python's dataframe

df[ (df.StateAb == "NSW") & (df.PartyAb == "LP") ]

this compliles OK,but if I type

df[ (df.StateAb == "NSW") and (df.PartyAb == "LP") ]

then it cannot be compiled correctly.

so what's the difference between "and" and "&",

You can refer these things. [2] [http://stackoverflow.com/questions/22646463/difference-between-and-boolean-vs-bitwise-in-python-why-difference-i] — Dhruv Bhavsar, Sep 03 '16 at 05:55
The hint is in the name. The boolean operator behaves according to the rules of boolean logic; the bitwise operator performs bitwise arithmetic. — Karl Knechtel, Sep 03 '16 at 06:27

Bolajio · Answer 1 · 2016-09-03T06:22:34.843

1

I found this one useful:

1 and 2
>> 2

1 & 2
>> 0

The first result is due to short circuiting. Python tests 1 and finds it true and returns the 2. But, the second part does 01 (Binary 1) & 10 (Binary 2) hence evaluating to 00 (1 & 0, 0 &1) , which is 0.

edited Sep 03 '16 at 06:22

answered Sep 03 '16 at 06:15

Bolajio

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1
15

You have "first" and "second" backwards in your explanation. – Barmar Sep 03 '16 at 06:18

the use of boolean logic "and" and bitwise operator "&"

1 Answers1