Python convert binary to int [duplicate] - python

This question already has an answer here:
Python 3, Converting a string storing binary data to Int
(1 answer)
Closed 2 years ago.
Convert binary number to integer in python?
like if there is any inbuilt function to do so?
Any ideas?

bno = '1001'
int(bno, 2)
This can be used

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how do i convert the string '8 * 2' into an integer in python [duplicate]

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Question is in the title.
How do i convert a string (8*2) for example into an integer sum.
I have googled around a lot and found no way to solve this isue and i cannot directly get the sum as integers.
Edit: I tried eval but it won't work because the sum has an x instead of a *

simple way of converting ASCII into HEX with no change in value [duplicate]

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How to convert hexadecimal string to bytes in Python?
(7 answers)
Closed 3 years ago.
What is the easiest way of converting a ASCII-String into hex without changing the value?
what i have:
string = "00FA0086"
what i want:
hex_string = b'\x00\xFA\x00\x86"
Is there a simple way or do i need to write a function?
You are looking for the binascii module from the Standard Python Library:
import binascii
string = "00FA0086"
print(repr(binascii.a2b_hex(string)))
gives:
b'\x00\xfa\x00\x86'

how can I write fractional powers in python code like x^(2/3)? [duplicate]

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How do I do exponentiation in python? [duplicate]
(3 answers)
Closed 4 years ago.
how can I write x^(2/3) in python code?
I want to include 1/3 and 2/3 in my calculation but unable to do so. please help
As you would do it with integer powers:
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Try this code here:
Also, you can initialize x
x=3
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How can I convert negative integer to binary in python? [duplicate]

This question already has answers here:
python3: How to get logical complement (negation) of a binary number, eg. '010' => '101'?
(5 answers)
Two Complement's Python (with as least bits as possible)
(1 answer)
Closed 4 years ago.
I need to convert negative number to binary in python.
How can I do it ?
EDIT: I need to use twos complement
bin(-2)
#'-0b10'
Use the built in binfunction to get a binary representation.

Python - Binary to decimal [duplicate]

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Closed 6 years ago.
I don't know much about Python, so sorry if this sounds silly. I am getting a string of 0s and 1s from an Arduino, and I need to convert it to a 'regular' number. I've found out how to convert a binary string to a decimal integer pretty easily, but how would I convert it if my binary string is stored in a variable ?
Let's say I've got a=00000110
int(a, 2) doesn't work (tells me "int() can't convert non-string with explicit base")
Is there a specific syntax that I should be aware of ? Can't I put a variable in here ?
Thanks in advance !

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