• 0 Vote(s) - 0 Average
• 1
• 2
• 3
• 4
• 5
[Tut] Converting Integer to String in Python

Converting Integer to String in Python

Quick Fix: Python’s built-in `str(x)` method converts an integer object `x` to a string object by using the `x.__str__()` method.

## ❖ Introduction

Problem Formulation: Given a `string` object in Python, what are the ways to convert it to an `Integer` type?

Example:

```# This is an integer
x = 13
print("x is of type", type(x))
# Converting integer to string
y = str(x)
print("y is of type", type(y))```

Output:

```x is of type <class 'int'>
y is of type <class 'str'>```

Let us have a look at an example where converting an integer becomes a defining factor in your code.

Scenario: Concatenate a string and an integer.

```version = 3
lang = 'Python'
print(lang+version) # Desired Output: Python3```

Actual Output:

```Traceback (most recent call last): File "D:/PycharmProjects/PythonErrors/int2string.py", line 3, in <module> print(version+lang)
TypeError: unsupported operand type(s) for +: 'int' and 'str'```

Explanation: The usage of the `+` operator to concatenate a string and integer is not allowed in Python. Thus, Python throws a `TypeError: unsupported operand type(s) for +: 'int' and 'str'` in this case.

The solution to this problem is to convert the integer object to a string object and then concatenate the two strings as shown in the solution below.

Solution:

```version = 3
lang = 'Python'
print(lang+str(version)) # Output: Python3```

Before moving on to the solutions, I highly recommend you to go through the type conversion techniques explained in this tutorial.

Now, without further ado, let us dive into the solutions to our mission-critical question – “How to convert an integer to a string in Python?

## Method 1: Using The str() Method

Python’s built-in `str(x)` function converts the object `x` to a string using the `x.__str__()` method or, if non-existent, the `repr(x)` built-in function to obtain the string conversion.

• The `str()` method returns a string type of an object. The object can be char, integer, etc. The str() method returns a string type of an object. The object can be char, integer, or a string.

Syntax:

`str(object)`

Example:

```num_int = 2500
num_str = str(num_int)
print("num_str: ", num_str)
print("Type of num_float: ", type(num_int))
print("Type of num_str: ", type(num_str))```

Output:

```num_str: 2500
Type of num_float: <class 'int'>
Type of num_str: <class 'str'>```

## Method 2: Using The format() Function

We can use the `format()` method in Python, for converting integers to strings. This method permits you to set placeholders inside a string and then convert any other data type (integer, float) to a string and fill the placeholders. Curly brackets ‘{} ’ are used to define the placeholders.

Syntax

`"{}" .format (int)`

Example:

```# This is an integer
y = 20
print("The value of y is", y)
print("Initially the number is of type", type(y)) # Converting integer to string using format()
y = "{}".format(y)
print("The number is of type", type(y), "after conversion.")```

Output:

```The value of y is 20
Initially the number is of type <class 'int'>
The number is of type <class 'str'> after conversion.```

## Method 3: Using String Conversion ‘%s‘

Python utilizes two unique styles of string formatting: the oldest style that depends on the modulo operator (%), and the more up-to-date Python 3 style that utilizes the format function. (As seen in method 2).

• Python’s old standard string conversion method uses the modulo operator (the percent sign %) as a unique symbol to demonstrate the various types of formats.
• The conversion specifiers, for example, %s and %d show up in the format string as placeholders.
• These specifiers direct how the operation will format the values.
• %s is used for string conversion.

Example:

```# This is an integer
no = 2
print("Initially the value of the number is", no)
print("The number is of type", type(no)) # Converting integer to string using %s
conv = "% s" % no
print("The number is of type", type(conv), "after conversion.")
```

Output:

```Initially the value of the number is 2
The number is of type <class 'int'>
The number is of type <class 'str'> after conversion.```

## Method 4: Using f-strings

f-strings are supported in Python 3.6 or higher versions. It is represented by string literals that have an f as a prefix and curly braces containing the expressions. The variables in the expression get replaced by the values during evaluation at runtime.

Syntax:

`f'{ int }'`

Example:

```# This is an integer
x = 50
print("The value of the number is", x)
print("The number is of type", type(x)) # Converting integer to string using f strings
y = f'{x}'
print("The value of the number remains", y)
print("The number is of type", type(y), "after conversion.")
```

Output:

```The value of the number is 50
The number is of type <class 'int'>
The value of the number remains 50
The number is of type <class 'str'> after conversion.```

## Method 5: Using a Custom Method

Another workaround, that deserves to be mentioned is a user-defined custom method that converts the integer object to a string object as shown in the following example.

Example:

```def convert(x, type_): x = type_(x) return x
num = 25
print("Initially type of num : ", type(num))
print("Type of num after conversion: ", type(convert(num, str)))```

Output:

```Initially type of num : <class 'int'>
Type of num after conversion: <class 'str'>```

## ❖ Conclusion

Thus, the following methods can be used to convert an integer to a string in Python:

•  The `str()` built-in method.
•  The `format()` Function.
•  String Conversion using ‘%s‘.
•  Using f-strings.
•  Defining a Custom function.

I hope this article helped you. Please subscribe and stay tuned for more interesting articles in the future.

Authors
SHUBHAM SAYON
RASHI AGARWAL

Recommended Course:

• Do you want to master the most popular Python IDE fast?
• This course will take you from beginner to expert in PyCharm in ~90 minutes.
• For any software developer, it is crucial to master the IDE well, to write, test and debug high-quality code with little effort.

Join the PyCharm Masterclass now, and master PyCharm by tomorrow!

The post Converting Integer to String in Python first appeared on Finxter.

https://www.sickgaming.net/blog/2021/04/...in-python/

 Possibly Related Threads… Thread Author Replies Views Last Post [Tut] Python Regex to Return String Between Parentheses xSicKxBot 0 15 05-04-2021, 05:21 PM Last Post: xSicKxBot [Tut] How To Check if One String is a Subsequence of Another? xSicKxBot 0 31 04-22-2021, 05:00 PM Last Post: xSicKxBot [Tut] How To Remove All Non-Alphabet Characters From A String? xSicKxBot 0 31 04-17-2021, 09:56 PM Last Post: xSicKxBot [Tut] How to Check if a Python String Contains Only Digits? xSicKxBot 0 34 04-12-2021, 12:23 PM Last Post: xSicKxBot [Tut] How to Convert a String List to an Integer List in Python xSicKxBot 0 41 04-09-2021, 01:50 PM Last Post: xSicKxBot [Tut] How to Convert a Float List to a String List in Python xSicKxBot 0 39 04-07-2021, 02:53 PM Last Post: xSicKxBot [Tut] Python String to Float Conversion xSicKxBot 0 40 04-01-2021, 11:07 PM Last Post: xSicKxBot [Tut] How to Convert Hex String to Integer in Python xSicKxBot 0 44 03-30-2021, 01:04 PM Last Post: xSicKxBot [Tut] Python String zfill() xSicKxBot 0 46 03-22-2021, 06:30 PM Last Post: xSicKxBot [Tut] How to Create a Tuple from a String and a List of Strings xSicKxBot 0 51 03-13-2021, 09:55 AM Last Post: xSicKxBot

Forum Jump:

 Active Threads News - F4F Reveals Banjo-Kazooie Mumbo J... Last Post: xSicKxBot Yesterday 11:16 PM » Replies: 0 » Views: 3 News - Review Roundup For Spiral: From T... Last Post: xSicKxBot Yesterday 11:16 PM » Replies: 0 » Views: 16 Black Ops 2 Box and Name ESP | Fully Ext... Last Post: Jaesanta Yesterday 10:34 PM » Replies: 55 » Views: 20949 [Tut] [FANG KILLER ICP] Will the Interne... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 9 (Indie Deal) Star Wars, No Man's Sky, Co... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 10 Unity Mega Bundle 2021 On Now Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 11 Mobile - Noob Army Tycoon codes – free m... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 10 AppleInsider - UK repair firm fined \$147... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 10 Microsoft - Securing a new world of hybr... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 9 Fedora - Using Ansible to configure Podm... Last Post: xSicKxBot Yesterday 05:04 PM » Replies: 0 » Views: 10