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Introspeksi Kod
Kod introspeksi ialah keupayaan untuk memeriksa kelas, fungsi, dan kata kunci untuk mengetahui apa mereka, apa yang mereka lakukan dan apa yang mereka ketahui.
Python menyediakan beberapa fungsi dan utiliti untuk introspeksi kod.
help()
dir()
hasattr()
id()
type()
repr()
callable()
issubclass()
isinstance()
__doc__
__name__
Selalunya, yang paling penting ialah fungsi help, kerana anda boleh menggunakannya untuk mengetahui apa yang fungsi lain lakukan.
Latihan
Cetak senarai semua atribut objek Kenderaan yang diberikan.
# Use the help function to see what each function does.
# Delete this when you are done.
help(dir)
help(hasattr)
help(id)
# Define the Vehicle class.
class Vehicle:
name = ""
kind = "car"
color = ""
value = 100.00
def description(self):
desc_str = "%s is a %s %s worth $%.2f." % (self.name, self.color, self.kind, self.value)
return desc_str
# Print a list of all attributes of the Vehicle class.
# Your code goes here
# Define the Vehicle class
class Vehicle:
name = ""
kind = "car"
color = ""
value = 100.00
def description(self):
desc_str = "%s is a %s %s worth $%.2f." % (self.name, self.color, self.kind, self.value)
return desc_str
# Print a list of all attributes of the Vehicle class.
print(dir(Vehicle))
test_output_contains("['__doc__', '__module__', 'color', 'description', 'kind', 'name', 'value']")
test_student_typed("print")
success_msg("Very nice!")
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