Need help python " Write an Array Data Structure which has a constructor, "len", "str", "itr", "getitem" and "setitem" methods. Then create an object of this Array class with 6 elements in it. Fill the object of this class with numbers from 3 to 8. print the array and show the length of the array object." Here is the array code """ File: arrays.py An Array is a restricted list whose clients can use only [], len, iter, and str. To instantiate, use = array(, ) The fill value is None by default. """ class Array(object): """Represents an array.""" def init(self, capacity, fillValue = None): """Capacity is the static size of the array. fillValue is placed at each position.""" self.items = list() for count in range(capacity): self.items.append(fillValue) def len(self): """-> The capacity of the array.""" return len(self.items) def str(self): """-> The string representation of the array.""" return str(self.items) def iter(self): """Supports traversal with a for loop.""" return iter(self.items) def getitem(self, index): """Subscript operator for access at index.""" return self.items[index] def setitem(self, index, newItem): """Subscript operator for replacement at index.""" self.items[index] = newItem

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ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Need help python

Write an Array Data Structure which has a constructor, "len", "str", "itr", "getitem" and "setitem" methods.

Then create an object of this Array class with 6 elements in it. Fill the object of this class with numbers from 3 to 8.

print the array and show the length of the array object."

Here is the array code

"""
File: arrays.py

An Array is a restricted list whose clients can use
only [], len, iter, and str.

To instantiate, use

<variable> = array(<capacity>, <optional fill value>)

The fill value is None by default.
"""

class Array(object):
"""Represents an array."""

def __init__(self, capacity, fillValue = None):
"""Capacity is the static size of the array.
fillValue is placed at each position."""
self.items = list()
for count in range(capacity):
self.items.append(fillValue)

def __len__(self):
"""-> The capacity of the array."""
return len(self.items)

def __str__(self):
"""-> The string representation of the array."""
return str(self.items)

def __iter__(self):
"""Supports traversal with a for loop."""
return iter(self.items)

def __getitem__(self, index):
"""Subscript operator for access at index."""
return self.items[index]

def __setitem__(self, index, newItem):
"""Subscript operator for replacement at index."""
self.items[index] = newItem

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