Python: tuple() function
tuple() function
The tuple() function is used to create a tuple in Python. Iterable may be a sequence, a container that supports iteration, or an iterator object.
Read more about tuple from Python tuple and Python Exercises.
Version
(Python 3.2.5)
Syntax:
tuple([iterable])
Parameter:
Name | Description | Required / Optional |
---|---|---|
iterable | A sequence, collection or an iterator object. | Required. |
Example: Python tuple() function
tup1 = tuple()
print('tup1=', tup1)
# creating a tuple from a list
tup2 = tuple([2, 6, 10])
print('tup2=', tup2)
# creating a tuple from a string
tup1 = tuple('Python Exercise')
print('tup1=',tup1)
# creating a tuple from a dictionary
tup1 = tuple({3: 'three', 4: 'four'})
print('tup1=',tup1)
Output:
tup1= () tup2= (2, 6, 10) tup1= ('P', 'y', 't', 'h', 'o', 'n', ' ', 'E', 'x', 'e', 'r', 'c', 'i', 's', 'e') tup1= (3, 4)
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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")
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