Python tuple Data Type

Python tuple is an immutable ordered collection of items:

>>> ohlc = (25.05, 25.81, 24.97, 25.10)
>>> type(ohlc)
<class 'tuple'>

Most characteristic are the same for tuples and lists. Both can contain zero, one, or more items, which can be duplicate and can be of different types.

You can find any item from a tuple using its index (start from zero).

>>> ohlc[2]

Main difference from list is that a tuple is immutable. It can't be changed once created.

>>> ohlc = (25.05, 25.81, 24.97, 25.10)
>>> ohlc[1] = 25.90
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object does not support item assignment

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