Python | Check if variable is tuple

Sometimes, while working with Python, we can have a problem in which we need to check if a variable is single or a record. This has applications in domains in which we need to restrict the type of data we work on. Let’s discuss certain ways in which this task can be performed. 

Method #1: Using type() This inbuilt function can be used as shorthand to perform this task. It checks for the type of variable and can be employed to check tuple as well. 

Python3

# Python3 code to demonstrate working of
# Check if variable is tuple
# using type()

# initialize tuple
test_tup = (4, 5, 6)

# printing original tuple
print("The original tuple : " + str(test_tup))

# Check if variable is tuple
# using type()
res = type(test_tup) is tuple

# printing result
print("Is variable tuple ? : " + str(res))

Output : 

The original tuple : (4, 5, 6)
Is variable tuple ? : True

Method #2: Using isinstance()

Yet another function that can be employed to perform this task. It also returns true, in case the parent class of variable(if exists) is a tuple. 

Python3

# Python3 code to demonstrate working of
# Check if variable is tuple
# using isinstance()

# initialize tuple
test_tup = (4, 5, 6)

# printing original tuple
print("The original tuple : " + str(test_tup))

# Check if variable is tuple
# using isinstance()
res = isinstance(test_tup, tuple)

# printing result
print("Is variable tuple ? : " + str(res))

Output : 

The original tuple : (4, 5, 6)
Is variable tuple ? : True

Method: Using list comprehension 

Python3

test_tup = (4, 5, 6)
x=["true" if type(test_tup)==tuple else "false"]
print(x)

Output

['true']