Data Structure Using Python
https://www.tutorialspoint.com/python/python_data_structure_environment.htm
Data Structure Using Python
• Data structures are fundamental concepts of computer
science which helps writing efficient programs in any
language.
• Python is a high-level, interpreted, interactive and
object-oriented scripting language using which we can
study the fundamentals of data structure in a simpler
way as compared to other programming languages.
• Python is also a general-purpose programming
language that is becoming more and more popular for
doing data science. Companies worldwide are using
Python to harvest insights from their data and get a
competitive edge.
PYTHON SPECIFIC DATA STRUCTURES
• These data structures are specific to python language
and they give greater flexibility in storing different
types of data and faster processing in python
environment.
• List: It is similar to array with the exception that the
data elements can be of different data types. You can
have both numeric and string data in a python list.
• Tuple: Tuples are similar to lists but they are
immutable which means the values in a tuple cannot
be modified they can only be read.
• Dictionary: The dictionary contains Key-value pairs as
its data elements.
What can I do/build with Python? Is Python better for certain
programming needs? What can you/can't you do with Python
Installing Python
Windows Installation
• Here are the steps to install Python on Windows machine.
• Open a Web browser and go
to https://www.python.org/downloads/.
• Download the
• Run the downloaded file. This brings up the Python install
wizard, which is really easy to use. Just accept the default
settings, wait until the install is finished, and you are done.
• click this icon
Python shell for instant calculations
Create new file
Python script for coding
Setting path at Windows
• To add the Python directory to the path for a
particular session in Windows −
• At the command prompt − type path
%path%;C:\Python and press Enter.
• Note − C:\Python is the path of the Python
directory
How to Run
output
Python Identifiers
• A Python identifier is a name used to identify a
variable, function, class, module or other object.
• An identifier starts with a letter A to Z or a to z or
an underscore (_) followed by zero or more
letters, underscores and digits (0 to 9).
• Python does not allow punctuation characters
such as @, $, and % within identifiers. Python is a
case sensitive programming language.
Thus, Manpower and manpower are two
different identifiers in Python.
Here are naming conventions for Python identifiers
• Class names start with an uppercase letter. All
other identifiers start with a lowercase letter.
• Starting an identifier with a single leading
underscore indicates that the identifier is private.
• Starting an identifier with two leading
underscores indicates a strongly private identifier.
• If the identifier also ends with two trailing
underscores, the identifier is a language-defined
special name.
Reserved Words
The following list shows the Python keywords. These are reserved
words and you cannot use them as constant or variable or any
other identifier names. All the Python keywords contain
lowercase letters only.
and
exec
not
assert
finally
or
break
for
pass
class
from
print
continue
global
raise
def
if
return
del
import
try
elif
in
while
else
is
with
except
lambda
yield
Lines and Indentation
• Python provides no braces to indicate blocks
of code for class and function definitions or
flow control. Blocks of code are denoted by
line indentation, which is rigidly enforced.
• The number of spaces in the indentation is
variable, but all statements within the block
must be indented the same amount.
Laboratory Exercise 1
Make the output below from the
str =Hello Students of Data Structure and Algorithms
Hello
Students
Of
Data Structure
and Algorithms
Hello
Hello Students of Data Structure and Algorithms
Lab 2
Comments
Instructions
• print the (10 + 5), add the comment # Addition
• print the (10 * 5), add the comment # Multiplication
• print the (10 - 5), add the comment # Subtraction
• print the (10 / 10), add the comment # Division
Lab 3
Assigning values
• Suppose you have $100, which you can invest
with a 10% return each year. After one year,
it's 100×1.1=110
100×1.1=110 dollars,
• and after two years it's 100×1.1×1.1=121
100×1.1×1.1=121.
• Add code to calculate how much money you
end up with after 7 years.
• Print the result