code python-v1.3.py

# to print words
# print("***",'****','''*****''') => string
# pirnt(****) => integer
# print(**.**) => float
print('Hello "Python"', "Hello 'Python", '''Hello
Python''')
print(22)
print(3.5)

#---------------------------------------------------------------------
# Comments
# To make a comment, we use the hashtag. (#)

#---------------------------------------------------------------------
# Backslash
# To weave the lines together we use (\) Backslash 
# To go to a new line we use (\n) Backslash newline
# To put a tab in the line we use (\t) Backslash tab
# To place the backslash itself we use (\\) Backslash Backslash
# To put a single quotation, we use (\') Backslash Single Quotation
# To put a double quotations, we use (\") Backslash Double Quotations
# To repair the writing we use (\r) Backslash Repair
# To make a backspace we use (\b) Backslash Backspace
print("Hello \
Python")
print("Hello\n Python")
print("Hello \t Python")
print("Hello \\ Python")
print("Hello \' Python")
print("Hello \" Python")
print("Hello Python \r")
print(" Hello \b Python")

#---------------------------------------------------------------------
# Data types
# string Here is the writing data And it represents str()
print("Hello Python")
print("Hello Python in 2025")
print(" your age is 22.5")
# integer Here is the integer data And it represents int()
print(22)
# float This is the float data and it represents something float()
print(3.5)
# Boolean values ​​are logical values ​​in Python and represent bool()
#False
print(22 == 33)
#True
print(22 == 22)
# The empty value represents none
variable = None
# Lists are ordered structures and represent list()
# variable = [*, *, *, *]
print([1,2,3])
# Dictionaries are data that have keys and represent dict()
# variable = {"key" : "value", "key" : "value"}
# Variable.keys()
# Variable.values()
# Variable.items()
variable = {"name" : "ahmed", "age" : 21}
# Sets are unordered sets and represent set()
# variable = {*, *, *, *}
variable = {1, 2, 3, 4}
# sets are immutable
variable = frozenset([1, 2, 3, 4])
# Rows are immutable lists
#variable = (*, *, *, *)
variable = (1, 2, 3, 4)

#---------------------------------------------------------------------
# Arithmetic operations
# For plural we use (+)
# To subtract we use (-)
# To multiply we use (*)
# To divide we use (/)
# For approximate division we use (//)
# For the rest of the division we use (%)
# For exponent we use (**)
print(2 + 3)
print(3 - 2)
print(3 * 2)
print(3 / 10)
print(3 // 10)
print(3 % 10)
print(3 ** 3)

#---------------------------------------------------------------------
# To know the type of data we use type()
type("Hello Python")

#---------------------------------------------------------------------
# To enter information into the program we use input()
# if it was string
input("Hello Python")
# if it was integer
int(input(3))
# if it was float 
float(input(3.5))

#---------------------------------------------------------------------
# To create an exception in Python we use try: and except:
# try:
#   syntax
# except:
# syntax
try:
    int(input("Enter first number: "))
    int(input("Enter last number: "))
except:
    print("error")
#---------------------------------------------------------------------
# variables
# To set the value of the base variable, say:
# variable = value
# The variable can be string, integer, float, or any data type.
x = "Hello Python" # string
x = 3 # integer
x = 3.5 # float
# Arithmetic operations can be performed within the variable.
x = 3 + 4
x = 3 + 3.5
# or
x = 3
z = 4
n = 3.5
y = x + z
w = x - n
#The variable value can be modified.
x = 3
x += 2
# The value of x is currently 5.
x = 3
x -= 2
# The value of x is currently 1.
x = 3
x *= 2
# The value of x is currently 6.
x = 10
x /= 2
# The value of x is currently 5.
x = 10
x %= 3
# The value of x is currently 1.
x = 5
x **= 2
# The value of x is currently 25.
# This is not only for integer but also for string and float.
# If you want to remove an item from the variables list you can use del
del x
# To know the address of a variable in temporary memory, we use id()
x = 1
print(id(x))

#---------------------------------------------------------------------
# if loop
# To use conditional statements in Python, we use the if command.
#---------------------------------------------------------------------
# if variable == value :
#   syntax
# elif variable == value :
#   syntax
# else:
#   syntax
#---------------------------------------------------------------------
if x == 10 :
    print("yes")
elif x == 5 :
    print("no")
else:
    print("error")
# Warning: You can use more than one elif in an if statement, and you can use more than one statement in a syntax.

#---------------------------------------------------------------------
# for loop
# To create a loop in Python we use for
#---------------------------------------------------------------------
# for variable in value or syntax :
#   print(variable or value)
#---------------------------------------------------------------------
x = "Hello Python"
for z in x :
    print(z)
# or
for z in range(3) :
    print(z)

#---------------------------------------------------------------------
# while loop
# To make a continuous loop as long as the condition is met, we use while
#---------------------------------------------------------------------
# while variable or value == variable or value :
#   syntax
# break
# continue
#---------------------------------------------------------------------
x = 2
while x < 10 :
    print("Hello")
    x += 1
# To stop the process we used break
x = 2
while x < 10 :
    print("Hello")
    break

#---------------------------------------------------------------------
# break and continue
# To stop the process, but limits we use:
for x in range(10) :
    if x == 5 :
        break
    print(x)
# to continue the process we used continue
for x in range(10) :
    print(x)
    if x == 5 :
        print("You have reached 5")
        Question = input("Do you want to continue or leave(continue=y)(leave=n): ")
        if Question == "y" :
            continue
        elif Question == "n" :
            break
        else :
            print("error")
            break
            
#---------------------------------------------------------------------
# functions
# To create a function that can be called at any time, we use def
# def variable():
#   syntax or variable
def welcome():
    print("Hello Python")
welcome()
# or
def welcome():
    pass
welcome()
# or
def employee(name,job):
    print(name)
    print(job)
employee('ahmed', 'pro')
# or
def home(Kitchen,bedroom):
    print(f"this is {Kitchen}")
    print(f"this is {bedroom}")
home(Kitchen=50, bedroom=30)

#---------------------------------------------------------------------
# To import in Python we use import
# import class from another file or library
import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "<p>Hello, World!</p>"
#or
import python2
python2.color()
python2.number()

#---------------------------------------------------------------------
# class
# To create Object-Oriented Programming - OOP we use class
# class Variable:
#  def variable():
#       syntax or variable
# variable = Variable on class
# variable.syntax
class Home:
    print("Hello Python")
    y = "Hi"
    def home(self):
        print(f"Kitchen")
        print(f"bedroom")
x = Home()
print(x.y)
x.home()
# or
class Home:
    def __init__(self):
        print("Hello Home")

#---------------------------------------------------------------------
# Handling files and folder in Python
# w => write
# r => read
# a => append
# Create files (w)
x = open("Hello.txt", "w")
x.write("Hello Python")
x.close()

# Writing to files
x = open("Hello.txt", "a")
x.write("Hello")
x.close()

# Read files
x = open("Hello.txt", "r")
y = x.read()
print(y)

# Check file
import os
if os.path.exists("python.py"):
    print("yes")
else:
    print("no")

# remove file
import os
os.remove("Hello.txt")

# create folder
import os
os.mkdir("Hello")

# Check the folder
import os
if os.path.exists("Hello"):
    print("yes")
else:
    print("no")

# remove folder
import os
os.rmdir("Hello")

# listdir in folder
import os
x = os.listdir("Hello")
print(x)
# or
import os
x = os.listdir("hello")
for file in x:
    print(file)

#---------------------------------------------------------------------
# framework random
# To get a random result from 0 to 1 we use random.random
import random
x = random.random()
print(x)
# or
import random
print(random.random())

# To choose a random numeric value we use random.randint(*, *)
import random
x = random.randint(1, 10)
print(x)
# or
import random
print(random.randint(1, 10))

# To randomly select an alternative from the alternatives, we use random.choice()
import random
x = ["hi", "hello", "Hello", 1, 2]
z = random.choice(x)
print(z)
# or
import random
x = ["hi", "hello", "Hello", 1, 2]
print(random.choice(x))

# To mix values ​​we use random.shuffle()
import random
x = ["hi", "hello", "Hello", 1, 2]
z = random.shuffle(x)
print(z)

# Select some value or values ​​from the basic values ​​we use random.sample()
import random
x = ["hi", "hello", "Hello", 1, 2]
z = random.sample(x , 3)
print(z)