Python tuple fetching value

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a=(1,2,3,(4,5))

I created a tuple. How will I fetch the value of 4 only? It should be a single line command and without using for. I used a[3,0] all possible combinations.

If location is fixed you can access element like: a[3][0] with a[3] you will get (4,5) and a[3][0]--> 4 If location is not fixed you can iterate using a loop

for i in a:
    if type(i)==tuple:
        for j in i:
            print j

Getting one value from a tuple, You can search for a particular tuple in the results list by iterating over the list and checking the value of the second item of each tuple (which is� Returns the number of times a specified value occurs in a tuple: index() Searches the tuple for a specified value and returns the position of where it was found

a= (1,2,3,(4,5)) a[3][0] ==> 4

another method to just fetch 4 is

a= (1,2,3,(4,5))

ab= a[3]

now ab will be equal to (4,5)

so,

abc= ab[0]

so here abc will have 4 as output :)

Get item with value from tuple in python, When specifying a range, the return value will be a new tuple with the specified items. Example. Return the third, fourth, and fifth item: thistuple = ("apple", " banana"� Functions with Tuples in Python Lastly, functions can provide tuples as return values. This is useful because a function, which can only return a single value otherwise, can produce a tuple holding multiple values. Let’s create the following function, where A is the area and P is the perimeter:

4 is the first value in the fourth element of the tuple a=(1,2,3,(4,5)). In Python the index of a tuple starts at 0, so to print the first value (its index is 0) of the fourth element of the tuple a=(1,2,3,(4,5)) type this command:

a[3][0]

Results:

>>> a=(1,2,3,(4,5))
>>> a[3][0]
4
>>>

Python Tuples, Note: In case your generating a tuple with a single element, make sure to add a comma after Duration: 4:27 Posted: Aug 20, 2017 The tuple containing the actual parameters should be passed as args; it must actually be a tuple. The length of the tuple must be at least min and no more than max ; min and max may be equal. Additional arguments must be passed to the function, each of which should be a pointer to a PyObject* variable; these will be filled in with the values

Tuples in Python, NOTE : In unpacking of tuple number of variables on left hand side should be equal to number of values in given tuple a. Python uses a special syntax to pass � Python provides operator in and not in to check if an element exists in tuple. Suppose we have a tuple, # A tuple of numbers tupleObj = (12, 34, 45, 22, 33, 67, 34, 56)

Unpacking a Tuple in Python, But, if the element is itself a mutable data type like list, its nested items can be changed. We can also assign a tuple to different values (reassignment). # Changing� Python DB API allows us to fetch only a single row. To fetch a single row from a result set we can use cursor.fetchone (). This method returns a single tuple. It can return a none if no rows are available in the resultset. cursor.fetchone () increments the cursor position by one and return the next row.

Python Tuple (With Examples), Syntactically, a tuple is a comma-separated sequence of values. Although it But if we try to use item assignment to modify one of the elements of the tuple, we get an error: Once Python has created a tuple in memory, it cannot be changed . Indexing. We can use the index operator [] to access an item in a tuple, where the index starts from 0. So, a tuple having 6 elements will have indices from 0 to 5. Trying to access an index outside of the tuple index range (6,7, in this example) will raise an IndexError.

Comments
  • do you want a[3][0]? Think about it, a[3] gets you (4, 5) and then [0] on that gets you the first
  • it works but it's working is something like 2-D array fetching technique? but (4,5) is underlying inside this i am not understanding
  • I'm not sure what you are asking. list/tuple objects don't have dimensions. They are not like numpy.ndarray objects if that is what you are asking.