تمرین فانکشنهای سفارشی در پایتون

                "" print_hello_python():
    print('سلام پایتون')

                def print_hello_python():
    print('سلام پایتون')

""

                def print_string(""):
    print(input_string)

print_string('سلام پایتون')

                def double_number(number):
    result = number * 2
    '' result

result = double_number(5)

print(result)

                def double_number(number):
    # result = number * 2
    # return result
    ''


result = double_number(5)

print(result)

                def is_positive(number):
    if number > 0:
        return True
    else:
        return False

                def check_password_strength(password):
    if len(password) >= 8:
        return "قوی"
    else:
        return "ضعیف"


password = "P@ssw0rd"
result = check_password_strength(password)

print(result)

                def calculate_shipping_cost(weight, destination):
    if weight <= 0:
        return "وزن نامعتبر است"

    if destination == "iran":
        shipping_cost = 2 * weight
        return shipping_cost

    if destination == "international":
        shipping_cost = 6 * weight
        return shipping_cost

    return "مقصد نامعتبر است"


weight = 3
destination = "international"
result = calculate_shipping_cost(weight, destination)

print(result)

                def check_number(number):
    if number > 0:
        return 'عدد مثبت است'
    elif number < 0:
        return 'عدد منفی است'
   
    return 'عدد صفر است'


result = check_number(0)
print(result)

                def generate_username(first_name, last_name, separator):
    username = f'{first_name}{separator}{last_name}'
    return username


first_name = 'Emma'
last_name = 'Smith'
result = generate_username(first_name, last_name, '_')

print(result)

                def generate_username(first_name, last_name, separator = '_'):
    username = f'{first_name}{separator}{last_name}'
    return username


first_name = 'Emma'
last_name = 'Smith'
result = generate_username(first_name, last_name, '.')

print(result)

                def generate_username(first_name, last_name, separator = '_'):
    username = f'{first_name}{separator}{last_name}'
    return username


first_name = 'Emma'
last_name = 'Smith'
result = generate_username(first_name, last_name)

print(result)