Python: Test if a variable is a list or tuple or a set
Python Basic: Exercise-145 with Solution
Write a Python program to test if a variable is a list or tuple or a set.
Sample Solution-1:
Python Code:
#x = ['a', 'b', 'c', 'd']
#x = {'a', 'b', 'c', 'd'}
x = ('tuple', False, 3.2, 1)
if type(x) is list:
print('x is a list')
elif type(x) is set:
print('x is a set')
elif type(x) is tuple:
print('x is a tuple')
else:
print('Neither a list or a set or a tuple.')
Sample Output:
x is a tuple
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Sample Solution-2:
Python Code:
def check_type(nums):
if isinstance(x, tuple)==True:
return 'The variablex is a tuple'
elif isinstance(x, list)==True:
return 'The variablex is a list'
elif isinstance(x, set)==True:
return 'The variablex is a set'
else:
return 'Neither a list or a set or a tuple.'
x = ['a', 'b', 'c', 'd']
print(check_type(x))
x = {'a', 'b', 'c', 'd'}
print(check_type(x))
x = ('tuple', False, 3.2, 1)
print(check_type(x))
x = 100
print(check_type(x))
Sample Output:
The variablex is a list The variablex is a set The variablex is a tuple Neither a list or a set or a tuple.
Flowchart:
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Python Code Editor :
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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