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Type Casting in Python – GATE, Interview & Placement Practice
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Jun 1, 2025
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0:00
uh hello guys welcome to this video So
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in this video I will show you a very
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important concept in Python which refers
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to type casting converting from one data
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type to another data type It's very
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important concept in Python which is
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asked typically using during interviews
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competitive exams for placements If you
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go for interview this question is asked
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what is what you mean by type casting
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type casting refers to basically
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converting from string to integer from
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integer to string from floating number
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to integer number So Python has a series
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of built-in methods which implement type
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conversion or type casting So as you can
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see we are taking the number
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10 And now to convert this number to a
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floatingoint number we use the floating
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method right here Let me just show you
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what do I mean by taking a full example
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So if you have the number
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10 10.0 so this is actually a
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floatingoint number If you want to print
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out what is the type of this number you
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simply write type followed by the
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variable So the output of this will be
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float because it's a floatingoint number
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because it involves this decimal 10.0 If
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I try to execute this program if I you
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will see it will return this it's a
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floating point
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number So if you want to convert this
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into a integer we simply write here we
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type cast it into a integer by calling
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the int
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method So then we refer the variable
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name That's all So if you execute now it
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will round this number to 10.0 will be
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rounded off to 10
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The interesting thing is that if you
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write 10.5 what will be the output just
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see it will not be 10 it will be 11
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because 10.5 will be rounded off to 11
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So if you see still it is 10 I think
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Yeah So 10.5 is still rounded to if I
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say 10.9
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here Let me see the
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output again This
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is put to 10 So yeah So
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this the round the rounding off is not
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enabled by
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default You need to explicitly tell the
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Python compiler to float this to round
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this number to 11 So by default it
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doesn't do that We can even ask chat GPT
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for that
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But now if you want to basically you
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have a string variable If you want to
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convert the string into a number So we
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have this is actually a string Now so if
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you want to convert this string into a
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number we can print out the type of this
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So you can simply run this So now it's a
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string So if you want to convert this
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into a number if we simply write here
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int and then followed by the variable
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name So if you just execute
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now so you can see it can't be converted
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into int
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because it's
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a string So string can't be converted
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into number So this error will come
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right
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here So for this you need to have this
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into a number
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then only it will be converted you will
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see So in this easy way you can do type
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casting very
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easily So this is meant by type casting
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a type conversion from one data type to
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another data type So Python has the
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series of built-in methods which lets
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you do this So we have the string We
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also have the int here we have the again
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it we have also the floating type So
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these are the series of methods which
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are there So thank you very much for
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watching this
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video and uh also check out my website
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freemediatools.com
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uh which contains thousands of