This course provides a quick Python overview. It is for experienced programmers looking for key Python essentials to get productive quickly.

The aim of this mini-course is to give experienced developers a clear and concise overview of the Python language, so they can understand and write Python code in as short a time as possible. There are many Python books, courses, and tutorials out there, but this one is different in a way that it provides only the bare minimum information to be productive, thereby making use of your existing programming knowledge and not wasting your time with unnecessary background information.

If you want to learn Python quickly, this is the course for you.

Python Quickstart for Experienced Programmers

# Tuples and ranges

In the [previous lesson](https://www.educative.io/courses/python-quickstart-for-experienced-programmers/the-python-language-1#strings), we introduced `str`, which is an immutable sequence type for storing and manipulating strings. Other immutable sequence types are `tuple` and `range`. Tuples can be used for storing sequences of any type, and ranges store contiguous sequences of `int`.

x = (1, 2, 3, 4)   # a tuple is an immutable sequence
y = x[3]           # assign the 4th element in the tuple to y
print(y)           # print the integer 4
x = range(1,4)     # create a range from 1 (inclusive) to 4 (exclusive)
y = tuple(x)       # return a new tuple from the range
print(y)           # prints (1, 2, 3)
y[1] = 3           # y is immutable this will throw a TypeError exception

Whereas, ranges can also be created with a given step size. Now try using `help()`, `tuple()`, and `range()` to create a `tuple` that contains the sequence `(10, 8, 6, 4, 2)`.

Explore mutable and immutable sequences in Python.

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The Python Language 2

Tuples and ranges