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| Section | Objectives |
|---|---|
| Topic 1: Introduction to Object-Oriented Programming | - Classes and objects - Basic OOP concepts |
| Topic 2: File Handling and Exceptions | - Reading and writing files - Exception handling (try/except) |
| Topic 3: Data Structures | - Basic data manipulation - Lists, tuples, dictionaries |
| Topic 4: Functions and Modularity | - Modules and imports - Function definition and scope |
| Topic 5: Control Flow | - Loops (for, while) - Conditional statements (if / elif / else) |
| Topic 6: Debugging and Testing Basics | - Error identification and correction - Basic testing concepts |
| Topic 7: Python Programming Fundamentals | - Syntax and basic structure - Variables and data types - Operators and expressions |
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質問 # 57
Complete the function is_positive(number) that returns True if the number is greater than 0, and False otherwise.
def is_positive(number):
# TODO: Return True if number > 0, False otherwise
pass
正解:
解説:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives one parameter named number.
Step 2: The condition number > 0 checks whether the number is positive.
Step 3: In Python, this comparison already returns either True or False.
Correct code:
def is_positive(number):
return number > 0
Example:
print(is_positive(5))
print(is_positive(-2))
print(is_positive(0))
Output:
True
False
False
質問 # 58
Write a complete function reverse_string(text) that takes a string and returns it reversed.
For example, reverse_string( " hello " ) should return " olleh " .
def reverse_string(text):
# TODO: Return the reversed string
pass
正解:
解説:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives one string parameter named text.
Step 2: Python slicing can be used to reverse a string.
Step 3: The slice [::-1] means start at the end of the string and move backward by one character at a time.
Step 4: Return text[::-1].
Correct code:
def reverse_string(text):
return text[::-1]
Example:
print(reverse_string( " hello " ))
Output:
olleh
質問 # 59
Complete the function get_max(a, b) that returns the larger of two numbers. If they are equal, return either one.
def get_max(a, b):
# TODO: Return the larger of a and b
pass
正解:
解説:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives two parameters: a and b.
Step 2: Compare the two values using an if statement.
Step 3: If a is greater than or equal to b, return a.
Step 4: Otherwise, return b.
Correct code:
def get_max(a, b):
if a > = b:
return a
else:
return b
Simplified correct code:
def get_max(a, b):
return max(a, b)
Example:
print(get_max(10, 20))
print(get_max(30, 15))
print(get_max(5, 5))
Output:
20
30
5
質問 # 60
In the code for item in my_list:, what does item represent?
正解:D
質問 # 61
Which index position is returned when the string method .find( ' python ' ) is applied to the string ' learning python programming ' ?
正解:D
解説:
The .find() method returns the lowest index where the searched substring is found.
Example:
" learning python programming " .find( " python " )
Output:
9
Indexing starts at 0 in Python. In the string ' learning python programming ' , the word ' python ' begins at index 9. Python's built-in types documentation describes str.find() as returning the lowest index where the substring is found.
Therefore, the correct answer isB. 9.
質問 # 62
......
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