bytes_data = b'Hello, World!'
string_data = bytes_data.decode('utf-8')
print("String:", string_data)

class Rectangle:
    pass

class Square(Rectangle):
    pass

rectangle = Rectangle()
square = Square()

print(isinstance(rectangle, Rectangle))  # True
print(isinstance(square, Rectangle))     # True
print(isinstance(square, Square))        # True
print(isinstance(rectangle, Square))     # False

def remove_repeated_blocks(content_list: list[str], line_count: int) -> list[str]:
    """删除相邻重复的代码块，保留第一次出现的内容。"""
    if line_count <= 0:
        return content_list

    result = []
    seen = set()
    i = 0

    while i < len(content_list):
        block = tuple(line.strip() for line in content_list[i:i + line_count])

        if len(block) < line_count:
            result.extend(content_list[i:])
            break

        if block in seen:
            i += line_count
            continue

        seen.add(block)
        result.extend(content_list[i:i + line_count])
        i += line_count

    return result

import calendar

# Prompt user for year and month
year = int(input("Enter the year: "))
month = int(input("Enter the month: "))

# Create a calendar object
cal = calendar.monthcalendar(year, month)

# Display the calendar
print(calendar.month_name[month], year)
print("Mon  Tue  Wed  Thu  Fri  Sat  Sun")

for week in cal:
    for day in week:
        if day == 0:
            print("     ", end="")
        else:
            print(str(day).rjust(2), "  ", end="")
    print()

print("hellur")

#Python 3: Fibonacci series up to n
def fib(n):
 a, b = 0, 1
 while a < n:
     print(a, end=' ')
     a, b = b, a+b
 print()
fib(1000)