You can probably use the builtin bin function:
bin(8) #'0b1000'
to get the list:
[int(x) for x in bin(8)[2:]]
Although it seems like there's probably a better way...
Answer from mgilson on Stack Overflow Top answer 1 of 3
32
You can probably use the builtin bin function:
bin(8) #'0b1000'
to get the list:
[int(x) for x in bin(8)[2:]]
Although it seems like there's probably a better way...
2 of 3
22
Try this:
>>> list('{0:0b}'.format(8))
['1', '0', '0', '0']
Edit -- Ooops, you wanted integers:
>>> [int(x) for x in list('{0:0b}'.format(8))]
[1, 0, 0, 0]
Another edit --
mgilson's version is a little bit faster:
$ python -m timeit "[int(x) for x in list('{0:0b}'.format(8))]"
100000 loops, best of 3: 5.37 usec per loop
$ python -m timeit "[int(x) for x in bin(8)[2:]]"
100000 loops, best of 3: 4.26 usec per loop
Reddit
reddit.com › r/pythonlearning › i want to convert multiple integer values in a list into binary numbers.
r/PythonLearning on Reddit: I want to convert multiple integer values in a list into binary numbers.
October 8, 2023 -
Thank you for visiting.
Close: I solved it myself.
Thank you very much.
import numpy as LAC a = [50,51,52] print(LAC.unpackbits(LAC.array(a , dtype = LAC.uint8).reshape(len(a),1), axis = 1))
For example, when there is a list a = [50,51,52].
I'm looking for a function to convert this to binary numbers all at once.
I already know the algorithm and the coding, but I don't know if there is a function or not.
Therefore, I would like to ask everyone to let me know if the above function exists or not.
Top answer 1 of 2
2
you can use a list comprehension along with the bin() function to convert all the integers in your list to binary. this is how you can do it for your list a: a = [50, 51, 52] binary_list = [bin(x)[2:] for x in a] print(binary_list) This will give you a new list with the binary representations of all the integers in a. The [2:] is used to remove the '0b' prefix that bin() adds.
2 of 2
2
When you say convert to binary, you mean string representations of the numbers in binary, right? An alternative to bin is format # Format in binary >>> format(42, "b") '101010' # Format in binary in 10 characters, right justified >>> format(42, "10b") ' 101010' # Format in binary in 10 characters with leading 0's >>> format(42, "010b") '0000101010' # Format 50 - 52 in binary, in 8 characters, with leading 0's >>> [format(n, "08b") for n in range(50, 53)] ['00110010', '00110011', '00110100']
Converting Integers to binary and placing them in a list.
bin() returns a string containing a binary representation of the integer you pass to it. I'm assuming that you already have a list of integers, and you want to produce a list of strings, where the strings are the results of calling bin() on each of the integers in the first list. If any of that is incorrect, please clarify. integers = [1, 2, 3, 4, 5, 6, 7] binary_representations = [bin(x) for x in integers] More on reddit.com
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2
November 13, 2012python - Convert elements of a list into binary - Stack Overflow
Suppose I have a list: lst = [0, 1, 0, 0] How can I make python interpret this list as a binary number 0100 so that 2*(0100) gives me 01000? The only way that I can think of is to first make a More on stackoverflow.com
python - convert integer to binary - Stack Overflow
I have an integer which I want to convert to binary and store the string of bits in an one-dimensional array starting from the right. For example, if the input is 6 then it should return an array like [1,1,0]. How to do it in python? ... In case of bin() you just get the same string, but prepended with "0b", so you have to remove it. EDIT: Ok, so do not want just a string, but rather a list ... More on stackoverflow.com
How to convert a decimal number into a binary list with fixed number of bits in Python 3.8? - Stack Overflow
Suppose I have the decimal number 8, and I want to conver it into a binary list of length 8. It means if I give input as 8, I should get output as [0,0,0,0,1,0,0,0]. I am looking for an inbuilt com... More on stackoverflow.com
How do I convert an integer to binary in Python?
Call bin(number) for a string beginning with 0b, or format(number, 'b') when you want the binary digits without the prefix.
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Python int to Binary: bin(), format(), and f-strings
Can Python convert negative integers to binary?
bin(-5) returns '-0b101'; for a fixed-width two's-complement representation, mask the value with (1 << width) - 1 before formatting.
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Python int to Binary: bin(), format(), and f-strings
How do I convert binary text back to an integer?
Pass the text to int(value, 2), optionally after removing a 0b prefix or surrounding whitespace.
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Python int to Binary: bin(), format(), and f-strings
GeeksforGeeks
geeksforgeeks.org › python-binary-list-to-integer
Python - Binary list to integer - GeeksforGeeks
December 30, 2024 - In this article, we will check How we can Convert an Integer String to an Integer List Using split() and map()Using split() and map() will allow us to split a string into individual elements and then apply a function to each element.
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Python int to Binary: bin(), format(), and f-strings
July 13, 2026 - If you are exploring integer limits, PythonPool’s Python max int guide is a useful follow-up. Using bin() when the output must not include 0b. Forgetting that negative numbers are shown with a minus sign unless you apply a fixed-width mask. Padding after adding the prefix instead of padding the binary digits themselves.
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Convert Integers to Binary Lists in Programming - GadgetsFarms
July 2, 2026 - Many programming languages provide built-in ways to convert integers to binary strings. Once a binary string is available, it can be converted into a list of digits. In Python, for example, bin() returns a string beginning with 0b, so the prefix is removed before creating the list:
Finxter
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5 Best Ways to Convert an Integer to a Binary Array in Python - Be on the Right Side of Change
February 18, 2024 - A list comprehension is then applied to create the binary array. A recursive function can be devised to convert an integer to a binary array by dividing the integer by 2 and collecting the remainders in reverse order.
Delft Stack
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How to Convert Int to Binary in Python | Delft Stack
February 2, 2024 - As shown above, the binary of an integer can be simply obtained with bin(x) method. But if you want to remove the 0b prefix from its output, you can use the format function and format the output.
Finxter
blog.finxter.com › 5-best-ways-to-convert-python-lists-to-binary
5 Best Ways to Convert Python Lists to Binary – Be on the Right Side of Change
February 20, 2024 - Combining bin() with list comprehension provides a straightforward method to convert each integer in the list to binary format.
GeeksforGeeks
geeksforgeeks.org › python › integer-to-binary-string-in-python
Integer to Binary String in Python - GeeksforGeeks
July 23, 2025 - Input : 77 Output : 0b1001101 Explanation: Here, we have integer 77 which we converted into binary string · bin() function is the easiest way to convert an integer into a binary string.
Reddit
reddit.com › r/learnpython › converting integers to binary and placing them in a list.
r/learnpython on Reddit: Converting Integers to binary and placing them in a list.
November 13, 2012 -
I am trying to find a way of converting an integer to binary, and then placing that binary into a list. Is there a way to use the bin() command to perform such a task. If not, how should I approach this problem. I am fairly new to python, but have a decent understanding
Top answer 1 of 4
4
bin() returns a string containing a binary representation of the integer you pass to it. I'm assuming that you already have a list of integers, and you want to produce a list of strings, where the strings are the results of calling bin() on each of the integers in the first list. If any of that is incorrect, please clarify. integers = [1, 2, 3, 4, 5, 6, 7] binary_representations = [bin(x) for x in integers]
2 of 4
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converting an integer to binary This does not actually mean anything. Everything "is binary". What exactly do you want to end up in the list? What are you going to do with it? What is the purpose of having these values? and then placing that binary into a list. What do you mean "place it into a list"? Is there an existing list for some other purpose, that you want to append to? Do you have a list of these integers, and you want to produce the corresponding list of "binary" values? Or just what? Is there a way to use the bin() command to perform such a task. Did you try it? Does calling bin() on a test integer value produce the result you want?
Top answer 1 of 7
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Solution
Probably the easiest way is not to use bin() and string slicing, but use features of .format():
'{:b}'.format(some_int)
How it behaves:
>>> print '{:b}'.format(6)
110
>>> print '{:b}'.format(123)
1111011
In case of bin() you just get the same string, but prepended with "0b", so you have to remove it.
Getting list of ints from binary representation
EDIT: Ok, so do not want just a string, but rather a list of integers. You can do it like that:
your_list = map(int, your_string)
Combined solution for edited question
So the whole process would look like this:
your_list = map(int, '{:b}'.format(your_int))
A lot cleaner than using bin() in my opinion.
2 of 7
4
>>> map(int, bin(6)[2:])
[1, 1, 0]
If you don't want a list of ints (but instead one of strings) you can omit the map component and instead do:
>>> list(bin(6)[2:])
['1', '1', '0']
Relevant documentation:
binlistmap
datagy
datagy.io › home › python posts › python strings › python: int to binary (convert integer to binary string)
Python: Int to Binary (Convert Integer to Binary String) • datagy
December 19, 2022 - The Python bin() function is short for binary and allows us to convert an integer to a binary string, which is prefixed by '0b'. In later section, you’ll learn how to convert the integer using Python without the prefix.
Vultr Docs
docs.vultr.com › python › built-in › bin()
Python bin() - Convert Integer to Binary
September 27, 2024 - The bin() function in Python is a built-in utility used to convert an integer into its corresponding binary representation, prefixed with '0b', which indicates a binary value.
w3resource
w3resource.com › python-exercises › list › python-data-type-list-exercise-185.php
Python: Convert a given decimal number to binary list - w3resource
Original Number: 8 Decimal number ( 8 ) to binary list: [1, 0, 0, 0] Original Number: 45 Decimal number ( 45 ) to binary list: [1, 0, 1, 1, 0, 1] Original Number: 100 Decimal number ( 100 ) to binary list: [1, 1, 0, 0, 1, 0, 0] ... Write a Python program to convert a given decimal number to a binary list and then invert all binary digits.
TutorialsPoint
tutorialspoint.com › binary-list-to-integer-in-python
Binary to decimal and vice-versa in Python
December 19, 2019 - In this article, we will see how to convert Binary to Decimal and Decimal to Binary. Binary is the simplest kind of number system that uses only two digits of 0 and 1 (i.e. value of base 2).
Medium
medium.com › @gitauharrison › binary-representation-of-integers-in-python-bfd2f4d3c6e5
Binary Representation of Integers in Python | by Gitau Harrison | Medium
September 14, 2022 - Now that we have an in-depth ... an integer into its equivalent binary representation. We have already seen how to do so in earlier sections. For example, the number 1234 would be 10011010010. We arrived at this answer by doing the following: 1*2**10 + 0*2**9 + 0*2**8 +1*2**7 + 1*2**6 + 0*2**5 + 1*2**4 + 0*2**3 + 0*2**2 + 1*2**1 + 0*2**0 · So, how did we get the binary numbers in the first place? There are a few ways we can do the conversion in Python...
Top answer 1 of 3
2
You can do with list comprehension.
>>> [int(i) for i in bin(8)[2:].zfill(8)]
[0, 0, 0, 0, 1, 0, 0, 0]
bin(8) return the binary representation of an integer 8 and it's always prefixed with 0b. So bin(8)[2:] is to remove these first two characters(ie, 0b). And then you can use .zfill(8) to pad a numeric string with zeros on the left(with the given width 8)
2 of 3
0
You could build an f-string then iterate over that with map() as follows:
n = 8
lst = list(map(int, f'{n:08b}'))
print(lst)
Output:
[0, 0, 0, 0, 1, 0, 0, 0]
Top answer 1 of 5
9
You want to send a single byte for ALPHA if it's < 256, but two bytes if >= 256? This seems weird -- how is the receiver going to know which is the case...???
But, if this IS what you want, then
x = struct.pack(4*'B' + 'HB'[ALPHA<256] + 4*'B', *data)
is one way to achieve this.
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5
If you know the data and ALPHA position beforehand, it would be best to use struct.pack with a big endian short for that position and omit the 0 that might be overwritten:
def output(ALPHA):
data = [2,25,0,ALPHA,0,23,18,188]
format = ">BBBHBBBB"
return struct.pack(format, *data)
output(101) # result: '\x02\x19\x00\x00e\x00\x17\x12\xbc'
output(999) # result: '\x02\x19\x00\x03\xe7\x00\x17\x12\xbc'