Python Data Structures and File Handling

<p>The program raises an error. (B)</p> Signup and view all the answers

<p>str (B)</p> Signup and view all the answers

<p>tuple = () (D)</p> Signup and view all the answers

<p>Tuples can contain mixed data types, including nested tuples. (A)</p> Signup and view all the answers

<p>Tuple packing (A)</p> Signup and view all the answers

<p>Lists are versatile data types that can store a sequence of arbitrary objects, and the items in the list do not need to be of the same type. (D)</p> Signup and view all the answers

<p>Using the <code>append()</code> method or <code>insert()</code> method (D)</p> Signup and view all the answers

<p><code>x, y, z = my_tuple</code> (D)</p> Signup and view all the answers

<p><code>('c', 'b', 'a')</code> (D)</p> Signup and view all the answers

<p>Lists can store arbitrary objects, accommodating mixed data types, while strings are sequences of characters. (A)</p> Signup and view all the answers

<p><code>(1, 2, 3, 4, 5, 6)</code> (C)</p> Signup and view all the answers

<p>list = [] (A)</p> Signup and view all the answers

<p>It returns a new tuple <code>('x', 'y', 'x', 'y', 'x', 'y')</code> (D)</p> Signup and view all the answers

<p>my_list[1] = 25 (B)</p> Signup and view all the answers

<p>Element-wise addition of two lists using the <code>+</code> operator. (B)</p> Signup and view all the answers

<p>Prints each element on a new line: <code>a\nb\nc\nd</code> (C)</p> Signup and view all the answers

<p>[1, 2, 3, 1, 2, 3] (B)</p> Signup and view all the answers

<p>'banana' in my_list (B)</p> Signup and view all the answers

<p><code> (1, 2, 3, 'a', 'b', 1, 2, 3, 'a', 'b', 1, 2, 3, 'a', 'b')</code> (C)</p> Signup and view all the answers

<p>It checks if an element exists within the tuple. (B)</p> Signup and view all the answers

<p><code>0 0 0 0 0</code> (B)</p> Signup and view all the answers

<p>If either element is not a number, an error is returned. (D)</p> Signup and view all the answers

<p><code>False</code> (B)</p> Signup and view all the answers

<p>To iterate through each element of the tuple. (A)</p> Signup and view all the answers

<p>It checks if both elements are numbers; if not, it sorts the types alphabetically. (C)</p> Signup and view all the answers

<p><code>new_tuple = my_tuple * 2</code> (A)</p> Signup and view all the answers

<p>The program may crash or the file could be corrupted. (C)</p> Signup and view all the answers

<p>file.closed (B)</p> Signup and view all the answers

<p>f.close() (B)</p> Signup and view all the answers

<p>It automatically closes the file, even if exceptions occur. (A)</p> Signup and view all the answers

<p>file.mode (D)</p> Signup and view all the answers

<p>read() (A)</p> Signup and view all the answers

<p>os.getcwd() (A)</p> Signup and view all the answers

<p>A list of strings, where each string is a line. (C)</p> Signup and view all the answers

<p>os.getcwdb() (D)</p> Signup and view all the answers

<p>Read mode ('r') (B)</p> Signup and view all the answers

<p>os.mkdir() (B)</p> Signup and view all the answers

<p><code>with open('file.txt') as f: for line in f.readlines(): print(line)</code> (B)</p> Signup and view all the answers

<p>os.rename() (B)</p> Signup and view all the answers

<p>0 (B)</p> Signup and view all the answers

<p>17 (C)</p> Signup and view all the answers

<p>To list all files and directories in a specified directory. (A)</p> Signup and view all the answers

Lists in Python are created using comma-separated values within square brackets.

Lists in Python are mutable, meaning they can be changed after creation.

Indexes in lists allow access and manipulation of elements in the list.

Walking through each element in a list one by one is called traversing.

Elements in a list can be removed using specific methods or functions.

Concatenation combines two or more lists into one larger list.

Repetition allows elements of a list to be repeated multiple times using the '*' operator.

The 'in' operator checks if a specific element exists within a list.

A tuple with no elements, represented as ().

A tuple that contains only integer values, e.g., (1, 2, 3).

A tuple that can contain different types of values, e.g., (1, 'code', 3.4).

A tuple that contains other tuples or lists, e.g., ('color', [6, 4, 2], (1, 2, 3)).

Creating a tuple without parentheses by separating values with commas, e.g., 3, 2.6, 'color'.

Assigning the elements of a tuple into separate variables, e.g., a, b, c = tuple.

Creating a new tuple with the elements in reverse order using slicing, e.g., t1[::-1].

Combining two tuples together to create a new one, e.g., t3 = t1 + t2.

Memory that loses stored data when power is off, like RAM.

Memory that retains data even when not powered, such as disk drives.

A file that contains readable characters stored on disk, like a long string.

A file that stores data in binary format, like images or executables.

A function in Python used to open files and return a file object.

Repetition allows a tuple to be duplicated using the '*' operator.

Output shows a tuple repeated twice, merging the elements.

Examples of using 'in' to find items in a tuple.

Iterating through a tuple allows access to each element.

Syntax to traverse all elements of a tuple using a for loop.

Indexing helps locate the position of each element while iterating.

Tuples have built-in functions for comparison and membership.

The method used to close an open file in Python.

A context manager that automatically closes files after use.

Reads all contents of a file into a single string.

Reads a file line by line into a list of strings.

Properties that provide information about an opened file object.

Potential loss or damage to a file if not properly closed.

The process of accessing a file for reading or writing.

Demonstration of how to read file contents in Python.

Indicates if a file is closed (True) or open (False).

Returns the access mode (e.g., read, write) of a file.

Gives the name of the file as a string.

Indicates if space is required with print (True/False).

Returns the current working directory as a string.

Creates a new directory at the specified path.

Renames a directory, requires old and new names.

Lists all files and directories in the specified path.