121. What is the output of print([1, 2, 3] + [4, 5])?
- a) [1, 2, 3, 4, 5]
- b) [5, 7, 3]
- c) [[1, 2, 3], [4, 5]]
- d) Error
Answer: A - The + operator concatenates lists in Python.
122. Which method adds an element to the end of a list?
- a) append()
- b) add()
- c) extend()
- d) push()
Answer: A -
my_list.append(x) adds x to the end of the list.
123. What does print(bool(' ')) output?
- a) True
- b) False
- c) None
- d) Error
Answer: A - A string with a space is non-empty and therefore truthy.
124. Which operator checks if two variables reference the same object?
- a) is
- b) ==
- c) equals
- d) same
Answer: A - The
is operator checks for identity, not equality.
125. What is the output of print('Python'[1:])?
- a) ython
- b) Pytho
- c) Python
- d) ytho
Answer: A - Omitting the end index slices to the end of the string.
126. Which method adds elements from an iterable to a list?
- a) extend()
- b) append()
- c) concat()
- d) add_all()
Answer: A -
my_list.extend([1,2]) adds multiple elements.
127. What is the output of print('Python'.find('Py'))?
- a) 0
- b) 1
- c) True
- d) -1
Answer: A - Returns the starting index of the substring (0 in this case).
128. Which method returns a list sorted in reverse?
- a) sorted(my_list, reverse=True)
- b) my_list.reverse_sorted()
- c) my_list.sort(reverse=True)
- d) reversed(my_list)
Answer: A -
sorted() with reverse=True returns a new sorted list in descending order.
129. What does print('Python'[::-1]) output?
- a) nohtyP
- b) Python
- c) P
- d) Error
Answer: A - [::-1] reverses the string (step value of -1).
130. Which method returns the number of occurrences of a value in a list?
- a) count()
- b) occurrences()
- c) find_all()
- d) len()
Answer: A -
my_list.count(x) counts how many times x appears.
131. What is the output of print('Python'.isalnum())?
- a) True
- b) False
- c) None
- d) Error
Answer: A - Checks if all characters are alphanumeric (letters or numbers).
132. Which method inserts an element at a specific position?
- a) insert()
- b) add_at()
- c) push()
- d) set()
Answer: A -
my_list.insert(0, 'x') inserts at index 0.
133. What is the output of print('Python'.upper())?
- a) PYTHON
- b) python
- c) Python
- d) Error
Answer: A - Converts all characters to uppercase.
134. Which method removes all items from a list?
- a) clear()
- b) remove_all()
- c) empty()
- d) delete()
Answer: A -
my_list.clear() empties the list.
135. What does print('Python'.split('th')) return?
- a) ['Py', 'on']
- b) ['P', 'on']
- c) ['Python']
- d) Error
Answer: A - Splits the string at each occurrence of the separator.
136. Which function returns a list of integers from start to stop?
- a) range()
- b) list_range()
- c) sequence()
- d) int_range()
Answer: A -
list(range(3)) returns [0, 1, 2].
137. What is the output of print('Python'[0:6:2])?
- a) Pto
- b) yhn
- c) Python
- d) Pyth
Answer: A - Takes every second character from index 0 to 5.
138. Which method returns a shallow copy of a list?
- a) copy()
- b) clone()
- c) duplicate()
- d) list()
Answer: A -
my_list.copy() creates a new list with the same elements.
139. What does print('Python' * 2) output?
- a) PythonPython
- b) Python2
- c) Python Python
- d) Error
Answer: A - Strings can be multiplied by integers to repeat them.
140. Which method returns the last index of a value in a list?
- a) There is no built-in method for this
- b) rindex()
- c) last_index()
- d) find_last()
Answer: A - Python lists don't have a built-in method for finding the last index (but strings have rfind()).