String concepts in python Part 4

There are some search and replace functions operations in strings as given below:-
1.) find():- The find() function returns the index value of the string where the substring is found between start index and end index.start index and end index is optional parameter.

• If substring is present in given string then this function returns the index of the first occurrence of the substring.
• If the substring is not exist inside the string then it returns -1 index

3

Read More...

string concepts in python part 3

String operations in python:
There are many Built-in string function available in python language.Here We will learn content test functions with examples as given below:-
1.) isalpha() :-It returns True ,if all characters in the string are alphabets otherwise False. The alphabets can be lower case and upper case both.This function doesn't take any parameters.If string contains a white space or any numeric value then this function returns False.
Syntax:-
String.isalpha()

3

Read More...

Strings Concepts in Python Part 2

String operators in Python:-There are some operators used to perform some basic operations on strings.

• + (plus) operator) :-it is known as concatenation operator.it is used to concatenate two or more strings in python language.

e.g.

str1="Welcome to"
str2="MNT LAB"
str3="msdotnet"
str=str1+str2
print("Concatenate the two string: ",str)
print("Concatenate the two string: ",str1+' '+str3)

Output of Above Python program
Concatenate the two string:  Welcome toMNT LAB
Concatenate the two string:  Welcome to msdotnet

3

Read More...

Strings concepts in python part 1

What is Python strings?

• Python string is a collection of Unicode characters.
• String is a popular data type of python language.
• Python allow us to create the string by using single quotes,double quotes or triple quotes.
• Strings can be created by enclosing the the character or the sequence of characters in the quotes(single,double or triple ) in python language.

We can create a string in python in following way as given below:-

3

Read More...

Operators in Python with examples

Operators are special symbols in python which are responsible for a particular operation between two or more operands.Operators are more helpful for doing operations between two operands.We will learn everything about different type of operators in python with examples.
e.g.

a=5;b=6;
c=a+b
print("value of a+b= ",c)

Output of above program:-

value of a+b= 11
Descriptions:- In above program
operators --> =,+
operands --> a,b,c
There are many variety of operators present in python as follows:-

1. Arithmetic operators
2. Comparison operators
3. Assignment operators
4. Logical operators
5. Bitwise operators
6. Membership operators
7. Identity operators

3

Read More...

Print() function in python Language with examples

The print() function is used for sending the output to the screen.It is used to display the output of any variables like string,list,tuple,set,dictionary,etc.Print() function is a built-in function in python language.
Syntax:-
print(*objects,sep=' ',end='\n',file=sys.stdout,flush=False)

Descriptions:-

  1.) objects:-The object can be Integer,Float,string,list,tuple,set,etc.
e.g.

a=234
b='ram'
list=[1,2,3,4,5,6]
tuple=(1,2,3,4,5,6)
dictionary={'a':'apple','b':'bag','c':'cat','d':'dog'}
set={'a','e','i','o','u'}
print("value of a=",a)
print("value of b=",b)
print("value of list=",list)
print("value of tuple=",tuple)
print("value of dictionary=",dictionary)
print("value of set=",set)
print("value of 12*45=",12*45)

output of the above python program:-

value of a= 234

value of b= ram

value of list= [1, 2, 3, 4, 5, 6]

value of tuple= (1, 2, 3, 4, 5, 6)

value of dictionary= {'a': 'apple', 'b': 'bag', 'c': 'cat', 'd': 'dog'}

value of set= {'o', 'e', 'i', 'a', 'u'}

value of 12*45= 540

  2.) sep=' ' :-This parameter is used to give space between multiple objects.You an use this parameter other than space also.It will be shown in below programs.

e.g.

a=5
b=6
c=24
d=60
e='ram'
f='sita'
print("value of a,b,c,d=",a,b,c,d)
print("value of a,b,c,d=",a,b,c,d,sep='  ')
print("value of a,b,c,d=",a,b,c,d,sep=',')
print("value of a,b,c,d=",a,b,c,d,sep='\n')
print("value of e,f =",e+' '+f)

output of the above python program:-
value of a,b,c,d= 5 6 24 60
value of a,b,c,d=  5  6  24  60
value of a,b,c,d=,5,6,24,60
value of a,b,c,d=
5
6
24
60
value of e,f = ram sita
  3.) end=' \n' :-It means,when we call print () function each time.it will end at a new line.In python by default ,print() function always ends at a new line.You can change it. i will see in the programs.

3

Read More...