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Python Programming Questionnaire
Assignment Title: Exploring Python Programming Concepts
Question 1: What are the main differences between Python 2 and Python 3?
Answer: The main differences between Python 2 and Python 3 include syntax and library
changes. Python 3 uses print() as a function, whereas Python 2 uses print as a
statement. Division of integers in Python 3 results in a float, while in Python 2, it results
in an integer (unless explicitly using from __future__ import division). Python 3
has better Unicode support, with str being Unicode by default and bytes type for byte
data. Several libraries have been updated or deprecated in Python 3, making it the
preferred version for new development.
Question 2: Explain the concept of list comprehensions and provide an example.
Answer: List comprehensions provide a concise way to create lists in Python. They
consist of an expression followed by a for clause, and can include multiple for or if
clauses. Example:
python
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squares = [x**2 for x in range(10)]
This creates a list of squares of numbers from 0 to 9.
Question 3: How does exception handling work in Python? Provide an example.
Answer: Exception handling in Python is done using try, except, else, and finally
blocks. The try block contains the code that might raise an exception. The except block
handles the exception. The else block executes if no exceptions are raised, and the
finally block executes regardless of whether an exception occurred. Example:
python
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try:
result =
except ZeroDivisionError:
print("Cannot divide by zero!")
else:
print("Division successful.")
finally:
print("Execution completed.")
Question 4: What is a Python decorator and how is it used? Provide an example.
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