我无法创建Animal类的对象。如果我这样做，它会给我一个错误说＆＃34;未解决的参考动物＆＃34;当#FILE I / 0代码被注释掉时。 如果它不是那么它会给我错误，如图所示。 Traceback most recent call: last error 有人可以帮我解决这个问题吗？我正在制作这个完整的文件，以便我可以涵盖PYTHON的基本语法。
import random
import sys
import os
import math
#SIMPLE THINGS AND MATHS
print("STARTING SIMPLE THINGS AND MATHS!!!")
print("Hello World") #This is a code for printing hello world
#Comment
"""
This
is a
multiline
comment
"""
name = "Derek"
y="2"
print (y)
print(name)
#Numbers Strings List Tuples Dictionaries
#+ - * / % ** //
name=15
print(name)
print("5 + 2 =",5+2)
print("5 - 2 =",5-2)
print("5 * 2 =",5*2)
print("5 / 2 =",5/2)
print("5 % 2 =",5%2)
print("5 ** 2 =",5**2)
print("5 // 2 =",5//2)
print("1 + 2 - 3 * 2 =", 1 + 2 - 3 * 2)
print("(1 + 2 - 3) * 2 =", (1 + 2 - 3) * 2)
quote = "\"Always remember you are unique\""
print("Single line quote: ",quote)
multi_line_quote = "\"""""Just
like everyone else""""\""
print("Multi Line quote: ",multi_line_quote)
print("%s %s %s" %('I like the quote', quote, multi_line_quote))
print("I dont like ",end="")
print("newlines")
print('\n'*5)
print("LISTS!!!")
#LISTS
grocery_list = ['Juice','Tomatoes','Potatoes',
'Bananas']
print('First item: ',grocery_list[0])
grocery_list[0] = "Green Juice"
print('First item: ',grocery_list[0])
print(grocery_list[1:3])
other_events=['Wash Car', 'Pick Up Kids','Cash Check']
to_do_list = [other_events, grocery_list] #list within a list
print(to_do_list[1][1]) #2nd item of second list
grocery_list.append('Onions')
print(to_do_list)
grocery_list.insert(1,"Pickle") #Inserting item on second index
print(to_do_list)
grocery_list.remove("Pickle") #Removing pickle from grocery list
print(to_do_list)
grocery_list.sort() #Sorting grocery list alphabetically
print(to_do_list)
grocery_list.reverse() #Sorting grocery list in reverse order albhabetically
print(to_do_list)
del grocery_list[4] #Delete item from grocery list which is on index 4
print(to_do_list)
to_do_list2 = other_events + grocery_list
print(len(to_do_list2))
print(max(to_do_list2)) #Whatever comes last alphabetically
print(min(to_do_list2)) #Whatever comes first alphabetically
to_do_list2.insert(1,"Bananas")
print(min(to_do_list2))
print("\n"*5)
#Tuples
print("TUPLES!!!")
pi_tuple=(3,1,4,1,5,9)
new_tuple=list(pi_tuple) #Converting tuple to list
new_list=tuple(new_tuple) #Converting list to tuple
print(len(new_list))
print(max(new_list))
print(min(new_list))
print("\n"*5)
#Dictionaries
print("DICTIONARIES!!!")
super_villains={'Fiddler':'Isaac Bowin',
'Captain Cold': 'Leonard Snart',
'Weather Wizard': 'Mark Mardon',
'Mirror Master': 'Sam Scudder',
'Pied Piper':'Thomas Peterson'}
print(super_villains['Captain Cold'])
print(len(super_villains))
del super_villains['Fiddler']
super_villains['Pied Piper']='Hartley Rathway'
print(len(super_villains))
print(super_villains.get("Pied Piper"))
print(super_villains.keys())
print(super_villains.values())
print("\n"*5)
#IF ElSE ELIF == != > >= < <=
print("IF ElSE ELIF (== != > >= < <=)")
age=21
if age>16:
print("You are old enough to drive")
else:
print("You are not old enough to drive")
if age>=21:
print("You are old enough to drive a tractor trailer")
elif age>=16:
print("You are old enoguh to drive a car")
else:
print("You are not old enough to drive")
#LOGICAL OPERATORS (AND OR NOT)
age=30
if ((age>=1) and (age<=18)):
print("You get a birthday")
elif (age==21)or(age>=65):
print("You get a birthday")
elif not(age==30):
print("You don't get a birthday")
else:
print("You get a birthday party yeah")
print("\n"*5)
#LOOPS
print("LOOPS!!!")
print('\n')
print("FOR LOOPS!!!")
for x in range(0,10):
print(x,' ',end="")
print('\n')
grocery_list=['Juice','Tomatoes','Potatoes','Bananas']
for y in grocery_list:
print(y)
for x in [2,4,6,8,10]:
print(x)
print('\n')
num_list=[[1,2,3],[10,20,30],[100,200,300]]
for x in range(0,3):
for y in range(0,3):
print(num_list[x][y])
print('\n'*2)
print("WHILE LOOPS!!!")
random_num= random.randrange(0,16) #Generates a random number between 0 to 99
while(random_num!=15):
print(random_num)
random_num=random.randrange(0,16)
print('\n')
i=0;
while(i<=20):
if(i==0):
i += 1
continue
elif(i%2==0):
print(i)
elif(i==9):
break
else:
i+=1 #i=i+1
continue
i+=1
print('\n')
print('Finding prime numbers')
#FINDING PRIME NUMBERS BETWEEN 0 AND 20
max_num = 20
primes = [2] # start with 2
test_num = 3 # which means testing starts with 3
while test_num < max_num:
i = 0
# It's only necessary to check with the primes smaller than the square
# root of the test_num
while primes[i] <= math.sqrt(test_num):
# using modulo to figure out if test_num is prime or not
if (test_num % primes[i]) == 0:
test_num += 1
break
else:
i += 1
else:
primes.append(test_num)
test_num += 1
print(primes)
print('\n'*5)
#FUNCTIONS
print("FUNCTIONS")
def sum(fNum,lNum):
sumNum = fNum+lNum
return sumNum
sum_of_two = sum(1,2)
print(sum_of_two)
print("The sum of 1 and 2 is: ",sum(1,2))
print('\n'*5)
#TAKE INPUT FROM USER
print("TAKE INPUT FROM USER!!!")
print("What is your name: ")
#name = sys.stdin.readline()
#print("Hello ",name)
print('\n'*5)
#STRINGS
print("STRINGS!!!")
long_string="i'll catch you if you fall - The Floor"
print(long_string[0:4])
print(long_string[-5:])
print(long_string[:-5])
print(long_string[:4] + " be there")
print("%c is my %s letter and my number %d number is %.5f" %
('X','favorite',1,.14))
print(long_string.capitalize()) #Capitalizes first letter of the string
print(long_string.find("Floor"))
print(long_string.isalpha())
print(long_string.isalnum())
print(len(long_string))
print(long_string.replace("Floor","Ground"))
print(long_string.strip()) #Strip white space
quote_list = long_string.split(" ")
print(quote_list)
print('\n'*5)
#FILE I/0
print("FILE I/0!!!")
test_file = open("test.txt","wb") #Opens the files in write mode
print(test_file.mode)
print(test_file.name)
test_file.write(bytes("Write me to the file\n", 'UTF-8')) #Writes to the file
test_file.close()
test_file = open("test.txt","r+")
text_in_file = test_file.read()
print(text_in_file)
os.remove("test.txt") #Deletes the file
print('\n'*5)
#OBJECTS
print("OBJECTS!!!")
class Animal:
__name = None #or __name = ""
__height = 0
__weight = 0
__sound = 0
def __init__(self,name,height,weight,sound):
self.__name = name
self.__height = height
self.__weight = weight
self.__sound = sound
def set_name(self, name):
self.__name = name
def set_height(self, height):
self.__height = height
def set_weight(self, weight):
self.__weight = weight
def set_sound(self, sound):
self.__sound = sound
def get_name(self):
return self.__name
def get_height(self):
return str(self.__height)
def get_weight(self):
return str(self.__weight)
def get_sound(self):
return self.__sound
def get_type(self):
print("Animal")
def toString(self):
return "{} is {} cm tall and {} kilograms and say {}".format(self.__name,
self.__height,
self.__weight,
self.__sound)
cat = Animal('Whiskers',33,10,'Meow')
print(cat.toString())
答案 0 :(得分：0)
这是一个缩进问题。您正在类中创建Aninal类的实例。在课堂上排除最后两行。