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 are 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 those files are helpful for you.
 
Now I want to tell you about Coding Part of Python Programming Language:
  1. Simple Hello World Program
    1. # Comment    
    2.     
    3. print("Hello World"# print Hello World on Screen    
    4.     
    5. input() # Pause Console Screen   
    Output
     
    Hello World
     
  2. Variables
     
    Python programming language has the 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:
    1. name = input("Enter Your Name..."# Take input from user    
    2.     
    3. print("Type",type(name), "\n"# print type of 'name' variable    
    4.     
    5. principle = 5000 # Assign Value to the variable    
    6.     
    7. print("Amount Type...", type(principle),"\n")    
    8.     
    9. rate = 10.5    
    10.     
    11. print("Rate Type...", type(rate) ,"\n")    
    12.     
    13. time = 3    
    14.     
    15. print("Time Type...", type(time) ,"\n")    
    16.     
    17. interest = principle * rate * time / 100 # Calculate Interest    
    18.     
    19. print("Interest Type...", type(interest) ,"\n")    
    20.     
    21. print("Hello ", name, "!\nInterest is=", interest)    
    22.     
    23. 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:
    1. import math # import Math    
    2.     
    3. def type_conversion(): # Definition of Function 'type_conversion'    
    4.     
    5.     print("Type Conversion Fucntions...\n")    
    6.     
    7.     print("32.53 Converted into int = ",int(32.53) ,"\n")    
    8.     
    9.     print("32 Converted into float = ",float(32) ,"\n")    
    10.     
    11.     print("32.53 Converted into string = ",str(32.53) ,"\n")    
    12.     
    13.     input("Press Enter for next function types\n\n")    
    14.     
    15. def mathfunction():    
    16.     
    17.     print("Math Fucntions...\n")    
    18.     
    19.     print("Firstly 'import math' \n")    
    20.     
    21.     print("About imported math file ... ",math ,"\n")    
    22.     
    23.     radius =0.7;    
    24.     
    25.     circumference=2*math.pi*radius    
    26.     
    27.     print("Circumference of Circle is : ",circumference ,"\n")    
    28.     
    29.     area=math.pi*math.pow(radius,2)    
    30.     
    31.     print("Area of Circle",area ,"\n")    
    32.     
    33.     input("Press Enter for see How to Add new Function? \n\n")    
    34.     
    35. def _simple_():    
    36.     
    37.     print("Hello I'm in Now _simple_() function \n")    
    38.       
    39.     print("print(_simple_)","show function Location of _simple_ ",_simple_ ,"\n")    
    40.     
    41.     print("Type(_simple_)"," show Type of _simple_ ",type(_simple_),"\n\n")    
    42.     
    43. def parameter(param):    
    44.     
    45.     print("Parameter is : ",param,"\n\n");    
    46.     
    47. def special_parameter(param):    
    48.     
    49.     print(param, "\n")    
    50.     
    51. def dou_parameter(value1,value2):    
    52.       
    53.     print("Addition of Value1 & Value2 is : ",value1+value2,"\n\n")    
    54.     
    55.     
    56. type_conversion() # calling function 'type_conversion'    
    57.     
    58. mathfunction()    
    59.     
    60. _simple_()    
    61.     
    62. val=input("Enter Any String...")    
    63.     
    64. parameter(val)    
    65.     
    66. special_parameter('parameter '*5# Special Parameter    
    67.     
    68. val1=input("Enter First Value...")    
    69.     
    70. val2=input("Enter Sscond Value...")    
    71.     
    72. dou_parameter(val1,val2)    
    73.     
    74. input()   
    Output
     
    Type Conversion Functions...
     
    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 Functions...
     
    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 Second Value...KuMaR
     
    Addition of Value1 & Value2 is : NeErAjKuMaR
     
    So the above example shows 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:
    1. def simple(x):    
    2.     
    3.     if(x > 0):    
    4.     
    5.     print("X is Positive Number \n")    
    6.     
    7. def alternate(x):    
    8.     
    9.     if(x>0):    
    10.     
    11.     print("X is positive Number \n")    
    12.     
    13.     else:    
    14.     
    15.     print("X is Negative Number \n")    
    16.     
    17. def chained(x):    
    18.     
    19.     if(x==0):    
    20.     
    21.     print("X is Zero \n")    
    22.     
    23.     elif(x>0):    
    24.     
    25.     print("X is Positive Number \n")    
    26.     
    27.     else:    
    28.     
    29.     print("X is Negative Number \n")    
    30.     
    31. value=input("Enter Value...")    
    32.     
    33. value=int(value)    
    34.     
    35. simple(value)    
    36.     
    37. alternate(value)    
    38.     
    39. chained(value)    
    40.     
    41. 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.