Convert int to bits python

5 Easy Methods to Convert Int to Binary String in Python

To convert int to binary in Python, use the bin() method. The bin() method is used to convert a decimal to a binary data type. The bin() function accepts a number as an argument and returns its equivalent binary string prefixed with “0b”.

Example

binary = bin(19) print(binary)

And we get the binary string in the output. The bin() is faster than the other approaches since it takes less time to convert into binary.

Method 2: Using the format() method

The bin() method returns an output with “0b” as a prefix. To remove the “0b” prefix from its output, use the format function and format the output.

The format(value, format_spec) is a built-in Python function that accepts two parameters – value and format_spec and returns the formatted output according to the format_spec.

Example

bindata = format(19, "b") print(bindata)

And we get the output without “0b” in the prefix.

If you want an n-bit representation of binary, you can use the lambda function.

getbinary = lambda x, n: format(x, 'b').zfill(n) print(getbinary(11, 21))

And we get the binary string of length 21.

Method 3: Using the str.format() function

The string.format() is a built-in Python method that formats the specified value(s) and inserts them inside the string’s placeholder. The placeholder is defined using curly brackets: < >.

Example

Method 4: Using f-strings

Python f-strings allow us to make string formatting a little bit more intuitive. They also allow us to apply formatting to our strings similarly to traditional string formatting.

Example

positive_value = 2119 negative_value = -2119 positive_binary = f'' negative_binary = f'' print(f'') print(f'') 

positive_binary='100001000111' negative_binary='-100001000111'

Method 5: Using a custom function

Example

def int_to_binary(integer): binary_string = '' while (integer > 0): digit = integer % 2 binary_string += str(digit) integer = integer // 2 binary_string = binary_string[::-1] return binary_string print(int_to_binary(2119))

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Python: Int to Binary (Convert Integer to Binary String)

You’ll learn a brief overview of this conversion and how binary strings are represented in computers. Then, you’ll learn how to use four different methods to use Python to convert int to binary. These include, the bin() function, string formatting, f-strings, the format() function, as well as naive implementation without the use of any functions.

The Quick Answer: Use the format() Function

What are Binary Strings for Integers?

The common integer system that we’re used to, the decimal system, uses a base of ten, meaning that it has ten different symbols. These symbols are the numbers from 0 through to 9, which allow us to make all combinations of numbers that we’re familiar with.

Binary strings, on the other hand, use a base of two, meaning that they only have two numbers to express different numbers. These numbers are either 0 or 1. While the binary number system has been in use in different ancient civilizations (such as Egypt and India), it is used extensively in electronics and computer system in modern times.

In the next sections, you’ll learn how to use Python to convert an integer to a binary using the bin() function.

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Use Python bin to Convert Int to Binary

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.

Let’s take a look at how we can turn a positive integer into a binary string using Python:

# Convert an integer to a binary string using Python bin() positive = 123 binary = bin(positive) print(binary) Returns: '0b1111011'

We can see that a binary string with the ‘0b’ prefix has been returned.

Let’s check the type of the statement that’s been returned, using the built-in type() function:

# Checking the type of our binary string positive = 123 binary = bin(positive) print(type(binary)) # Returns: #

We can see here that the function returned a string, as expected.

Now let’s see what happens when we pass in a negative integer and try to use Python to convert it to binary string:

# Convert an integer to a binary string using Python bin() negative = -123 binary = bin(negative) print(binary) Returns: '-0b1111011'

We can see that there’s also a ‘-‘ prefix to our string, letting us know that the number is a negative value.

In the next section, you’ll learn how to use Python string formatting to convert an int to a binary string.

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Use Python String Formatting to Convert Int to Binary

If you’re wanting to convert a Python integer to a binary string without the ‘0b’ prefix, you can use string formatting.

Python string formatting allows us to define different format types for passing in values. In this case, we’ll pass in the format code of » , which allows us to convert an integer to binary.

Let’s see how we can pass in a few integer values, both positive and negative, and convert them to binary string using string formatting:

# Convert an integer to a binary string using Python string formatting positive = 123 negative = -123 positive_binary = ''.format(positive) negative_binary = ''.format(negative) print(f'') print(f'') # Returns: # positive_binary='1111011' # negative_binary='-1111011'

We can see here that this method returns the same strings, without the ‘0b’ prefix.

In the next section, you’ll learn Python f-strings to convert an int to a binary string.

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Use Python f-strings to Convert Int to Binary

Python f-strings allow us to make string formatting a little bit more intuitive. They also allow us to apply formatting to our strings in similar ways to traditional string formatting.

As a quick refresher on Python f-strings, they’re strings introduced in Python versions 3.6 and above, and are created by prefixing either a ‘f’ or ‘F’ to the string.

Let’s see how we can convert an integer to a binary string using Python f-strings. We’ll try this for the same positive and negative integers as above:

# Convert an integer to a binary string using Python f-strings positive = 123 negative = -123 positive_binary = f'' negative_binary = f'' print(f'') print(f'') # Returns: # positive_binary='1111011' # negative_binary='-1111011'

We can see here that the same values are returned. Python f-strings may not work in all versions of Python, but they are intuitive and easy to understand.

In the next section, you’ll learn how to use the Python format() function to convert an int to a binary string.

Want to learn more about Python f-strings? Check out my in-depth tutorial, which includes a step-by-step video to master Python f-strings!

Use Python format to Convert Int to Binary

Another way to convert a Python integer to a binary string is to use the built-in format() function. The format() function takes value and a format spec as its arguments.

Because of this, we can pass in a value (in this case, an integer) and a format spec (in this case “b”), to specify that we want to return a binary string.

Let’s see how we can accomplish this using Python:

# Convert an integer to a binary string using Python format() positive = 123 negative = -123 positive_binary = format(positive, 'b') negative_binary = format(negative, 'b') print(positive_binary) print(negative_binary) # Returns: # positive_binary='1111011' # negative_binary='-1111011'

This is also a very readable way in which we can convert Python integers to string. The function makes it clear that we’re converting a value to something else, even specifying a type.

In the final section, you’ll learn how to convert an int to a binary string from scratch.

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Convert an Int to Binary in Python without a Function

In this final section, you’ll learn how to convert how to create a naive method to convert a Python integer to a string. You’ll actually create a custom function that does this, but be able to understand how the conversion works.

Practically speaking, this is not something you’d really need to do, but it can be a helpful task to understand for programming interviews.

# Convert an integer to a binary string using a custom function def int_to_binary(integer): binary_string = '' while(integer > 0): digit = integer % 2 binary_string += str(digit) integer = integer // 2 binary_string = binary_string[::-1] return binary_string print(int_to_binary(123)) # Returns: # 1111011

Conclusion

In this post, you learned how to use Python to convert int to binary, meaning how to convert integer values to binary strings. You learned how to do this using a number of different methods, including using the Python bin() function, string formatting, f-strings, the format() function, and without any functions at all.

If you want to learn more about the Python bin() function, check out the official documentation here. To learn more about the Python format() function, you can find the official documentation here.

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How to do Convert int to binary in Python

In this post, we will explore How to do Convert int to binary in Python using the built-in method and str.format() and f-string.

1. bin() function to Convert int to binary in python

The Python inbuilt bin() function is used to get an integer’s value binary representation that it returns as a string prefixed with “0b”.The value should be a valid Python int object. To remove the prefixed “0b” can use slicing.

Syntax

Parameter

Python Program to convert int to binary

mynum = 45 print(bin(mynum)) #eliminate "ob" prefix mynum = 45 bin_val = bin(mynum)[2:] print(bin_val)

Python Program to convert int to 16-bit binary

In this example, we are using the bin() function to convert int number to 16-bit binary.

Python Program to convert integer to binary

num = 45 binary = "".format(num) print(binary)

Python int to 16-bit binary Using format()

In this example, we are using the format() function to convert int number to 16-bit binary.

num = 45 binary= ''.format(num) print(binary)

3. Using format() to Convert int to binary in python

The easy way to remove the “0b” prefix is the Python built-in format() function. It takes two arguments the first argument is the value we want to convert into binary and the Second argument is a format that covert value to the given format.

Syntax

Parameters

• val: The number that we want to convert into binary string
• Format : It convert the passed value to given format.

Format	Description
=	Places the sign to the leftmost position
b	Convert value to Binary format.
c	Converts the value to Unicode character
d	Convert value to Binary to Decimal format
o	Convert the value to Octal format
x	Convert the value to Hex format in lower case.
E	Convert value to scientific format with upper case E
	Left align the output
>	Right align the output
_	Use to add thousand separator

Table of format Type

Python Program to int to binary Using format()

In this example, we convert int to binary bypassing b as a format. more formates

binary = format(45, "b") print(binary)

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