Python Basic Notes (Beginner)
1. Data Types in Python
Integer
Whole numbers को Integer कहते हैं।
print(7)
Output
7
Float
Decimal numbers को Float कहते हैं।
print(7.5)
Output
7.5
String
Text को String कहते हैं। Python में string को ” “ , ‘ ‘ या ”’ ”’ में लिखा जा सकता है।
print(“hello world”)
print(‘hello world’)
print(”’hello world”’)
Output
hello world
hello world
hello world
String with Quotes
print(“‘hello world'”)
Output
‘hello world’
print(‘”hello world”‘)
Output
“hello world”
Boolean
Boolean में केवल दो values होती हैं।
True
False
2. Variable in Python
Variable एक container होता है जिसमें data store किया जाता है।
Example
x = “Sajid”
y = 7
z = 7.5
print(x)
print(z)
Output
Sajid
7.5
3. Algorithm
Algorithm किसी problem को solve करने के लिए step-by-step instructions होती हैं।
Example:
-
Start
-
Input values
-
Process the values
-
Display result
-
End
4. Flowchart
Flowchart algorithm को diagram की form में दिखाता है।
Example problem: Length और Breadth से Rectangle का Area निकालना
Steps
-
Start
-
Input Length
-
Input Breadth
-
Area = Length × Breadth
-
Print Area
-
End
5. Correct Sequence (Computer Start Steps)
नीचे दिए गए steps को सही क्रम में arrange करें:
Correct order:
-
Switch on the main power supply
-
Press the power button of CPU
-
Wait for the desktop screen
-
Enter the password
-
Open a program
6. Input Function Example
x = input(“Enter your name: “)
print(x, “- Welcome to Python Programming”)
Example Output
Enter your name: Sajid
Sajid – Welcome to Python Programming
7. Country Example
name = input(“Enter your name: “)
country = input(“Enter name of the country: “)
print(“Welcome”, name)
print(“Your country”, country, “is a beautiful country”)
8. Sum of Three Numbers
x = int(input(“Enter the first number: “))
y = int(input(“Enter the second number: “))
z = int(input(“Enter the third number: “))
print(“The sum of three numbers =”, x + y + z)
9. Calculator Program
x = float(input(“Enter the first number: “))
y = float(input(“Enter the second number: “))
print(“Addition:”, x + y)
print(“Subtraction:”, x – y)
print(“Multiplication:”, x * y)
print(“Division:”, x / y)
10. First Name and Last Name Program
first_name = input(“Enter the first name: “)
last_name = input(“Enter the last name: “)
print(“Hello”, first_name, last_name, “welcome to the Python program”)
11. If-Else Example
x = int(input(“Enter the money received: “))
if x >= 100:
print(“Buy a cake”)
elif x >= 50:
print(“Buy biscuits”)
elif x >= 40:
print(“Buy chocolate”)
else:
print(“Don’t buy anything”)
12. Even or Odd Program
x = int(input(“Enter the value: “))
if x % 2 == 0:
print(“Even”)
else:
print(“Odd”)
13. String Concatenation Example
first_name = “Sajid”
last_name = “Sheikh”
full_name = first_name + ” ” + last_name
print(“Hello, ” + full_name.title() + “!”)
Output
Hello, Sajid Sheikh!
14. Using Variable
first_name = “Sajid”
last_name = “Sheikh”
full_name = first_name + ” ” + last_name
message = “Hello, ” + full_name.title() + “!”
print(message)
15. Simple Concatenation
x = “sajid”
y = “sheikh”
z = x + ” ” + y
print(“Hello ” + z.title() + “!”)
16. New Line and Tab Space
Tab Space
print(“\tsajid”)
print(“\t\tsajid”)
Output
sajid
sajid
New Line
print(“sajid”)
print(“\nsajid”)
Output
sajid
sajid
Multiple Languages
print(“python\nc\nc++\njava”)
Output
python
c
c++
java
Tab with Languages
print(“Language:\n\tpython\n\tc\n\tc++\n\tjava”)
Output
Language:
python
c
c++
java
17. rstrip() Function
rstrip() right side के extra spaces को remove करता है।
first_lan = “python “
sec_lan = “python”
print(first_lan == sec_lan)
Output
False
Space remove करने के बाद
third_lan = first_lan.rstrip()
print(third_lan == sec_lan)
Output
True
18. Integer to String Conversion
age = 23
message = “Happy ” + str(age) + “rd birthday”
print(message)
Output
Happy 23rd birthday
