Operators

There are mainly three operators for string.

• Mathematical Operators
• Membership Operators
• Comparison Operators

Mathematical Operators

• We can apply the following mathematical operators for Strings.
  • + ⇒ operator for concatenation
  • * ⇒ operator for repetition

Example

print("internet"+"knowledge"+"hub")
print("internet"*3)

Output

internetknowledgehub
internetinternetinternet

Remark

• To use + operator for Strings, compulsory both arguments should be str type.
• To use * operator for Strings, compulsory one argument should be str and other argument should be int.

Membership Operators

• We can check whether the character or string is the member of another string or not by using “in” and “not in” operators.

Example

s=input("Enter main string:")
subs=input("Enter sub string:")
if subs in s:
    print(subs,"is found in main string")
else:
    print(subs,"is not found in main string")

Output

Enter main string:internetknowledgehub
Enter sub string:internet
internet is found in main string

Enter main string:internetknowledgehub
Enter sub string:python
python is not found in main string

Comparison Operators

• We can use comparison operators (<, <=, >, >=) and equality operators (==, !=) for strings.
• Comparison will be performed based on alphabetical order.

Example

s1=input("Enter first string:")
s2=input("Enter Second string:")
if s1==s2:
    print("Both strings are equal")
elif s1<s2:
    print("First String is less than Second String")
else:
    print("First String is greater than Second String")

Output

Enter first string:internet
Enter Second string:internet
Both strings are equal

Enter first string:ajay
Enter Second string:amit
First String is less than Second String

Enter first string:amit
Enter Second string:ajay
First String is greater than Second String

Ungraded Questions

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