Python in its definition provides methods to perform inplace operations, i.e. doing assignments and computations in a single statement using an operator module.
Example
x += y is equivalent to x = operator.iadd(x, y) Inplace Operators in Python
Below are some of the important Inplace operators in Python:
- iadd()
- isub()
- iconcat()
- imul()
- itruediv()
- imod()
iadd() in Python
This function is used to assign and add the current value. This operation does "a+=b" operation. Assigning is not performed in case of immutable containers, such as strings, numbers, and tuples.
# importing operator to handle operator operations
import operator
# using iadd() to add and assign value
x = operator.iadd(2, 3);
# printing the modified value
print ("The value after adding and assigning : ", end="")
print (x)
Output
The value after adding and assigning : 5
Python iconcat()
This function is used to concat one string at end of second. In the below example, we have used iconcat() function.
# importing operator to handle operator operations
import operator
# initializing values
y = "geeks"
z = "forgeeks"
# using iconcat() to concat the sequences
y = operator.iconcat(y, z)
# using iconcat() to concat sequences
print ("The string after concatenation is : ", end="")
print (y)
Output
The string after concatenation is : geeksforgeeks
isub() in Python
This function is used to assign and subtract the current value. This operation does "a-=b" operation. Assigning is not performed in case of immutable containers, such as strings, numbers and tuples.
# importing operator to handle operator operations
import operator
# using isub() to subtract and assign value
x = operator.isub(2, 3);
# printing the modified value
print ("The value after subtracting and assigning : ", end="")
print (x)
Output
The value after subtracting and assigning : -1
Inplace Operator - imul()
This function is used to assign and multiply the current value. This operation does "a*=b" operation. Assigning is not performed in case of immutable containers, such as strings, numbers and tuples.
# importing operator to handle operator operations
import operator
# using imul() to multiply and assign value
x = operator.imul(2, 3);
# printing the modified value
print ("The value after multiplying and assigning : ", end="")
print (x)
Output
The value after multiplying and assigning : 6
Python itruediv()
This function is used to assign and divide the current value. This operation does "a/=b" operation. Assigning is not performed in case of immutable containers, such as strings, numbers and tuples.
# importing operator to handle operator operations
import operator
# using itruediv() to divide and assign value
x = operator.itruediv(10, 5);
# printing the modified value
print("The value after dividing and assigning : ", end="")
print(x)
Output
The value after dividing and assigning : 2.0
Inplace Operator - imod()
This function is used to assign and return remainder . This operation does "a%=b" operation. Assigning is not performed in case of immutable containers, such as strings, numbers and tuples.
# importing operator to handle operator operations
import operator
# using imod() to modulus and assign value
x = operator.imod(10, 6);
# printing the modified value
print ("The value after modulus and assigning : ", end="")
print (x)
Output
The value after modulus and assigning : 4
