Python Programming Language - Part 1

Introduction

Python is an example of a high-level language. Other high-level languages you might have heard of are C, C++, Perl, and Java. it is much easier to program in a high-level language. Programs written in a high-level language take less time to write. They are shorter and easier to read About python in deeply and installation.

You can download .py files of the following examples that directly execute if you have already installed Python in your Computer.

Download Python LanguageTutorials and give star on GitHub if that files are helpful for you.

Now I want to tell you about Coding Part of Python Programming Language:

1. Simple Hello World Program
   

   # Comment
   
   print("Hello World") # print Hello World on Screen
   
   input() # Pause Console Screen

   Output
   
   Hello World
   
   
2. Variables
   
   Python programming language have same type of variable declaration conditions, but in this No One Keyword is used for declaration variables type.
   
   Example: int value ;
   
   Here int is not used in Python Programming Language for variable declaration.
   
   So I’m giving you full example of Variables:
   

   name = input("Enter Your Name...") # Take input from user
   
   print("Type",type(name), "\n") # print type of 'name' variable
   
   principle = 5000 # Assign Value to the variable
   
   print("Amount Type...", type(principle),"\n")
   
   rate = 10.5
   
   print("Rate Type...", type(rate) ,"\n")
   
   time = 3
   
   print("Time Type...", type(time) ,"\n")
   
   interest = principle * rate * time / 100 # Calculate Interest
   
   print("Interest Type...", type(interest) ,"\n")
   
   print("Hello ", name, "!\nInterest is=", interest)
   
   input()

   Output
   
   Enter Your Name...NeErAj KuMaR
   Type <class 'str'>
   
   Amount Type... <class 'int'>
   
   Rate Type... <class 'float'>
   
   Time Type... <class 'int'>
   
   Interest Type... <class 'float'>
   
   Hello NeErAj KuMaR !
   Interest is= 1575.0
   
   
3. Functions
   
   I’ll show simple math function and some other functions for performing the task.
   
   But when we want to perform some math function task, then ‘Import math’ library in Program.
   
   Example:
   

   import math # import Math
   
   def type_conversion(): # Definition of Function 'type_conversion'
   
       print("Type Conversion Fucntions...\n")
   
       print("32.53 Converted into int = ",int(32.53) ,"\n")
   
       print("32 Converted into float = ",float(32) ,"\n")
   
       print("32.53 Converted into string = ",str(32.53) ,"\n")
   
       input("Press Enter for next function types\n\n")
   
   def mathfunction():
   
       print("Math Fucntions...\n")
   
       print("Firstly 'import math' \n")
   
       print("About imported math file ... ",math ,"\n")
   
       radius =0.7;
   
       circumference=2*math.pi*radius
   
       print("Circumference of Circle is : ",circumference ,"\n")
   
       area=math.pi*math.pow(radius,2)
   
       print("Area of Circle",area ,"\n")
   
       input("Press Enter for see How to Add new Function? \n\n")
   
   def _simple_():
   
       print("Hello I'm in Now _simple_() function \n")
   
       print("print(_simple_)","show function Location of _simple_ ",_simple_ ,"\n")
   
       print("Type(_simple_)"," show Type of _simple_ ",type(_simple_),"\n\n")
   
   def parameter(param):
   
       print("Parameter is : ",param,"\n\n");
   
   def special_parameter(param):
   
       print(param, "\n")
   
   def dou_parameter(value1,value2):
   
       print("Addition of Value1 & Value2 is : ",value1+value2,"\n\n")
   
   
   type_conversion() # calling function 'type_conversion'
   
   mathfunction()
   
   _simple_()
   
   val=input("Enter Any String...")
   
   parameter(val)
   
   special_parameter('parameter '*5) # Special Parameter
   
   val1=input("Enter First Value...")
   
   val2=input("Enter Sscond Value...")
   
   dou_parameter(val1,val2)
   
   input()

   Output
   
   Type Conversion Fucntions...
   
   32.53 Converted into int = 32
   
   32 Converted into float = 32.0
   
   32.53 Converted into string = 32.53
   
   Press Enter for next function types
   
   
   Math Fucntions...
   
   Firstly 'import math'
   
   About imported math file ... <module 'math' (built-in)>
   
   Circumference of Circle is : 4.39822971502571
   
   Area of Circle 1.5393804002589984
   
   Press Enter for see How to Add new Function?
   
   
   Hello I'm in Now _simple_() function
   
   print(_simple_) show function Location of _simple_ <function _simple_ at 0x027B06F0>
   
   Type(_simple_) show Type of _simple_ <class 'function'>
   
   
   Enter Any String...NeErAj KuMaR
   Parameter is : NeErAj KuMaR
   
   
   parameter parameter parameter parameter parameter
   
   Enter First Value...NeErAj
   Enter Sscond Value...KuMaR
   Addition of Value1 & Value2 is : NeErAjKuMaR
   
   So above example show some function type and their uses.
   
   
4. Conditionals Statement
   
   In Python Programming Language, we have ”if” conditional statement but it don’t have switch/case in this language. Firstly, switch/case developed but after some time it was rejected.
   
   If you want to get full knowledge, read the article on the official website of Python.
   
   Example:
   

   def simple(x):
   
       if(x > 0):
   
       print("X is Positive Number \n")
   
   def alternate(x):
   
       if(x>0):
   
       print("X is positive Number \n")
   
       else:
   
       print("X is Negative Number \n")
   
   def chained(x):
   
       if(x==0):
   
       print("X is Zero \n")
   
       elif(x>0):
   
       print("X is Positive Number \n")
   
       else:
   
       print("X is Negative Number \n")
   
   value=input("Enter Value...")
   
   value=int(value)
   
   simple(value)
   
   alternate(value)
   
   chained(value)
   
   input()

   Output
   
   Enter Value...5
   X is Positive Number
   
   X is positive Number
   
   X is Positive Number
   
   Enter Value...0
   X is Negative Number
   
   X is Zero
   
   Enter Value...-3
   X is Negative Number
   
   X is Negative Number

I’ll be back for another tutorial on Python Programming Language. I hope you will easily understand my code for learning the purpose of Python.