Convert an integer to a binary string in Python

This post will discuss how to convert an integer to a binary string in Python.

1. Using `str.format()` function

A simple solution is to use the str.format() function, which performs a string formatting operation. To convert the integer to its binary representation, you can use the string presentation type b.

if __name__ == '__main__':

x = 100

binary = "{0:b}".format(x)

print(binary) # 1100100

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To get the binary string of specified length left-padded with all zeros, you can change the formatting specification to {0:08b}:

if __name__ == '__main__':

x = 100

binary = '{0:08b}'.format(x)

print(binary) # 01100100

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2. Using f-strings

Starting with Python 3.6, you can use f-strings. This can be done by prefixing the string literal with f or F. Here’s how the code would look like:

if __name__ == '__main__':

x = 100

binary = f'{x:08b}'

print(binary) # 01100100

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3. Using `format()` built-in function

Another option is to use the built-in function format(value[, format_spec]) which converts the specified value to a formatted string according to the formatting specification format_spec. Here’s an example of its usage:

if __name__ == '__main__':

x = 100

binary = format(x, "08b")

print(binary) # 01100100

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4. Using `bin()` built-in function

Finally, you may use the built-in function bin(), which converts an integer to a binary string prefixed with 0b. You can use slicing to get rid of the prefix, as shown below:

if __name__ == '__main__':

x = 100

binary = bin(x)[2:]

print(binary) # 1100100

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To get the binary string of specified length left-padded with zeros, you can use the zfill() function:

if __name__ == '__main__':

x = 100

binary = bin(x)[2:].zfill(8)

print(binary) # 01100100

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That’s all about converting an integer to a binary string in Python.

Convert an integer to a binary string in Python

1. Using str.format() function

2. Using f-strings

3. Using format() built-in function

4. Using bin() built-in function

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1. Using `str.format()` function

3. Using `format()` built-in function

4. Using `bin()` built-in function