英文:
error: expected an indented block, python
问题
抱歉，我不能提供代码的翻译，但我可以帮助您理解和解决问题。您提到的错误信息是"expected an indented block"，这通常意味着在函数定义之后需要一个缩进块。请检查您的代码，确保在函数def __add__(self,other):之后有正确的缩进块。示例代码应该如下所示：
def __add__(self, other):
# 在这里添加您的代码逻辑
pass # 或者您的代码块
确保在def __add__(self, other):下方添加您的代码逻辑，并确保使用正确的缩进。如果您仍然遇到问题，请提供更多代码上下文，以便我能够提供更具体的帮助。
英文:
so, im following a course called Python Game Development™ : Build 11 Total Games.
and I came across an error saying expected an indented block and I don't know how to fix it as the person who wrote the code has the same exact code as me. so, I don't get whats wrong because they had no error, and I did.
this is my code:
import collections
import math
import os
def path(filename):
filepath = os.path.realpath(__file__)
dirpath = os.path.dirname(filepath)
fullpath = os.path.join(dirpath,filename)
return fullpath
def line(a,b,x,y):
import turtle
turtle.up()
turtle.goto(a,b)
turtle.down()
turtle.goto(x,y)
class vector(collections.Sequence):
PRECISION = 6
__slots__ = ('_x','_y','_hash')
def __init__(self,x,y):
self._hash = None
self._x = round(x,self.PRECISION)
self._y = round(y,self.PRECISION)
@property
#getter
def x(self):
return self._x
@x.setter
def x(self,value):
if self._hash is not None:
raise ValueError('Cannot set x after hashing')
self._x = round(value,self.PRECISION)
@property
def y(self):
return self._y
@y.setter
def y(self,value):
if self._hash is not None:
raise ValueError('Cannot set y after hashing')
self._y = round(value,self.PRECISION)
def __hash__(self):
if self._hash is None:
pair = (self.x,self.y)
self._hash = hash(pair)
return self._hash
def __len__(self):
return 2
def __getitem__(self,index):
if index == 0:
return self.x
elif index == 1:
return self.y
else:
raise IndexError
def copy(self):
type_self = type(self)
return type_self(self.x,self.y)
def __eq__(self,other):
if isinstance(other,vector):
return self.x == other.x and self.y == other.y
return NotImplemented
def __ne__(self,other):
if isinstance(other,vector):
return self.x != other.x and self.y != other.y
return NotImplemented
def __iadd__(self,other):
def __add__(self,other):
the error is on def add(self,other):. I'm a beginner programmer. so if u could help me out with this error, it would be great. thank you
答案1
得分: 2
当您复制了代码时，您忘记复制__iadd__和__add__中的业务逻辑，如果添加它们，错误将消失。
def __iadd__(self, other):
# 在这里添加您的代码
def __add__(self, other):
# 在这里添加您的代码
注意：请将# 在这里添加您的代码替换为实际的业务逻辑。
英文:
When you copied the code, you forgot to copy the the business logic in iadd and add, if you add that the error will disappear.
def __iadd__(self,other):
# Your code goes here
def __add__(self,other):
# Your code goes here
Note: Replace # Your code goes here with the actual business logic.
答案2
得分: 0
存在**iadd(self,other)和add(self,other)**方法中的语法错误，因为没有提供实现并且方法没有正确关闭。
例如：
示例代码 1
def fun():
print("Hello")
示例代码 1的输出：
文件 "file1.py"，第 2行
print("Hello")
^
缩进错误：预期缩进块
示例代码 2
def fun():
pass
print("Hello")
示例代码 2的输出：
Hello
因此，我们已经为这些方法提供了实现，或者如果不需要的话，您可以将这些方法删除。
英文:
There is a syntax error in iadd(self,other) and add(self,other) methods, because there is no implementation provided and methods are not properly closed.
For Example:
Sample code 1
def fun():
print("Hello")
Output of Sample code 1
File "file1.py", line 2
print("Hello")
^
IndentationError: expected an indented block
Sample code 2
def fun():
pass
print("Hello")
Output of Sample code 2
Hello
Hence, we have provided an implementation for the method or if not needed you can remove these methods.
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