Python Set clear() Method

Python Set clear() Method

The set.clear() method removes all the elements from the set.

Syntax

set.clear()

Parameter

NA

Return

None

Example 1

# Python program explaining
# the set.clear() method 
# initializing the set
fruits = {"watermelon", "banana", "apple"}
# printing the set 
print("Actual set:",fruits)
# clearing off all the elements from the fruits set.
fruits.clear()
print("After the clear() method...")
print("Set:",fruits) 

Output

Actual set: {'apple', 'banana', 'watermelon'}
After the clear() method...
Set: set() 

Example 2

# Python program explaining
# the set.clear() method 
# set of week
week = {'Monday', 'Tuesday', 'Wednesday','Thursday'} 
# locating the elements of week in newWeek
newWeek = week
# clearing all the elements
week.clear()
print('Removing all the element using clear() method') 
print('Set: ', week)
print('New set: ', newWeek)
# again initializing the set
week = {'Wednesday','Thursday','Friday','Saturday'} 
newWeek = week
week = {}
print('Removing all the element by assigning {}')
print('Set: ', week)
print('New Set: ', newWeek) 

Output

Removing all the element using clear() method

Set:  set()

New set:  set()

Removing all the element by assigning {}

Set:  {}

New Set:  {'Friday', 'Thursday', 'Saturday', 'Wednesday'}

Python Set copy() Method

The set.copy() method in Python copies the set .

Syntax

set.copy()

Parameter

NA

Return

This method returns a shallow copy of the set.

Example 1

# Python program explaining

# the set.copy() method

# initializing the set

fruits = {"watermelon", "banana", "apple"}

# prinitng the set

print("Actual set: ",fruits)

# copying the set elements in new set.

newFruits= fruits.copy()

print("After the copying the dictionary...")

print("Copied set:",newFruits)

Output

Actual set:  {'apple', 'banana', 'watermelon'}

After the copying the dictionary...

Copied set: {'apple', 'banana', 'watermelon'}

Example 2

# Python program explaining

# the set.copy() method

vowels = {'a', 'e', 'i', 'o'}

# copying the vowels set to the secondSet

secondSet = vowels.copy()

# before adding

print ('Before adding... ')

print ('firstirst vowels set: ',vowels )

print ('Second  vowels set: ', secondSet )

# Adding element to second set, the first set does not change.

secondSet.add('u')

# after adding the last vowel 'u' in the set

print ('After adding... ')

print ('First vowels set: ',vowels )

print ('second  vowels set: ', secondSet )

Output

Before adding...

firstirst vowels set:  {'e', 'a', 'i', 'o'}

Second  vowels set:  {'e', 'a', 'i', 'o'}

After adding...

First vowels set:  {'e', 'a', 'i', 'o'}

second  vowels set:  {'e', 'a', 'i', 'o', 'u'}