How To Convert Data Types in Python 3 | Python Web Development
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How To Convert Data Types in Python 3

Before going to Data type conversion in Python procedure, you should have some basic knowledge of data types. Some of the most common data types in Python are numeric, string and boolean types. There are also built-in data types in Python that are dictlistset and frozenset, and tuple.

What is data type conversion in Python?

As the name says, it is converting the value of one data type to another. This process is called data type conversion in Python.

How many types of conversion is there in Python?

Similar to most languages, there are two types of conversion.

  1. Implicit Type Conversion
  2. Explicit Type Conversion

What is Implicit Type Conversion?

In implicit conversion, Python converts one data type into another data type without any user involvement.

Let’s consider the following code.


Note that there is no requirement for any conversion procedure here because Python will handle these kinds of conversions automatically.

What is Explicit Type Conversion?

In Explicit conversion, the user has to convert the data type of an object to the desired data type as per requirement. One can achieve the above using the default functions – float(), int(), string().
This process is sometimes called typecasting of data, as the user casts the data type of any object.

Consider the code below.

Its output will throw the following error.

In this scenario, Python cannot handle data type conversion automatically. So, we use Explicit conversion for these scenarios.

But how?

Check this code out!

Successful output:

In the above example, Python cannot convert data types automatically when you try to add two different data types that are not possible. To overcome such scenarios where Python cannot use implicit conversion, we use explicit conversion.

Here are some of the key points that you need to keep in mind when converting data types.

  1. Conversion always happens from one data type object to another data type object.
  2. Python interpreter will take care of Implicit conversion automatically, also, it avoids loss of data.
  3. Explicit Conversion also called Casting, when in-built functions were being used to perform this action.
  4. In Explicit Conversion, if we forcibly convert to a specific data type, there are chances for loss of data.

That’s all about conversion. If you have further questions or queries, write it in the comments. 

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Aishwarya Damani

An aspiring adolescent started her career as Software Engineer Trainee and slowly she's mastering all the rising technologies like Nodejs, Express.js, React.js, MongoDB, Sails. On the other hand, a perfect decision maker who is passionate about coding. Wait! there's half a lie! Yeah, this crazy foodie has an intense long lasting affair on trying different foods & exploring places.

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