Q2. What are the key features of Python?
- Python is an interpreted language. That means that, unlike languages like C and its variants, Python does not need to be compiled before it is run. Other interpreted languages include PHP and Ruby.
- Python is dynamically typed, this means that you don’t need to state the types of variables when you declare them or anything like that. You can do things like
x=111
and then x="I'm a string"
without error
- Python is well suited to object orientated programming in that it allows the definition of classes along with composition and inheritance. Python does not have access specifiers (like C++’s
public
,private
), the justification for this point is given as “we are all adults here”
- In Python, functions are first-class objects. This means that they can be assigned to variables, returned from other functions and passed into functions. Classes are also first class objects
- Writing Python code is quick but running it is often slower than compiled languages. Fortunately,Python allows the inclusion of C based extensions so bottlenecks can be optimized away and often are. The
numpy
package is a good example of this, it’s really quite quick because a lot of the number crunching it does isn’t actually done by Python
- Python finds use in many spheres – web applications, automation, scientific modelling, big data applications and many more. It’s also often used as “glue” code to get other languages and components to play nice.
x=111
and then x="I'm a string"
without errorpublic
,private
), the justification for this point is given as “we are all adults here”numpy
package is a good example of this, it’s really quite quick because a lot of the number crunching it does isn’t actually done by PythonQ1. What is the difference between list and tuples?
LIST | TUPLES |
Lists are mutable i.e they can be edited. | Tuples are immutable (tuples are lists which can’t be edited). |
Lists are slower than tuples. | Tuples are faster than list. |
Syntax: list_1 = [10, ‘Chelsea’, 20] | Syntax: tup_1 = (10, ‘Chelsea’ , 20) |
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