python中的串联变量
我创建了一个变量python中的串联变量,python,concatenation,kivy,Python,Concatenation,Kivy,我创建了一个变量colonne,它返回列的编号 我试着把它放在我的函数选择中,就像这样: self.ids.image+colonne+_1 以下是我的完整观点: Button: on_press: root.click_colonne(1) pos: 25,25 size: 100, 500 opacity:0 Image: source: 'image.png' pos: 0,0 size: 150,150 id: image
colonne
,它返回列的编号
我试着把它放在我的函数选择中,就像这样:
self.ids.image+colonne+_1
以下是我的完整观点:
Button:
on_press: root.click_colonne(1)
pos: 25,25
size: 100, 500
opacity:0
Image:
source: 'image.png'
pos: 0,0
size: 150,150
id: image1_1
Image:
source: 'image.png'
pos: 0,100
size: 150,150
id: image1_2
Image:
source: 'image.png'
pos: 0,200
size: 150,150
id: image1_3
Image:
source: 'image.png'
pos: 0,300
size: 150,150
id: image1_4
Image:
source: 'image.png'
pos: 0,400
size: 150,150
id: image1_5
Button:
on_press: root.click_colonne(2)
pos: 125,25
size: 100, 500
opacity:0
Image:
source: 'image.png'
pos: 100,0
size: 150,150
id: image2_1
Image:
source: 'image.png'
pos: 100,100
size: 150,150
id: image2_2
Image:
source: 'image.png'
pos: 100,200
size: 150,150
id: image2_3
Image:
source: 'image.png'
pos: 100,300
size: 150,150
id: image2_4
Image:
source: 'image.png'
pos: 100,400
size: 150,150
id: image2_5
以下是我的完整功能:
def click_colonne(self, colonne):
if self.ids.image+colonne+_1.source == "image.png":
self.ids.image+colonne+_1.source = "image_rouge.png"
elif self.ids.image+colonne+_2.source == "image.png":
self.ids.image+colonne+_2.source = "image_rouge.png"
elif self.ids.image+colonne+_3.source == "image.png":
self.ids.image+colonne+_3.source = "image_rouge.png"
elif self.ids.image+colonne+_4.source == "image.png":
self.ids.image+colonne+_4.source = "image_rouge.png"
elif self.ids.image+colonne+_5.source == "image.png":
self.ids.image+colonne+_5.source = "image_rouge.png"
这里是错误
File "main.py", line 36
self.ids.image+colonne+_5.source = "image_rouge.png"
^
SyntaxError: can't assign to operator
有人能给我正确的语法吗?串联不会生成变量名,您只是在添加它的值,而不能在运算符=。更好的选择是将名称构建为字符串,并通过ids字典使用它
self.ids["image{}_{}".format(colone, 5)].source = "image_rouge.png"
另一个解决办法是
getattr(self.ids, "image{}_{}".format(colone, 5)).source = "image_rouge.png"
下面是另一个在Python 3.6及更高版本中有效的解决方案:
def click_colonne(self, colonne):
for i in range(1, 6):
if self.ids[f"image{colone}_{i}"].source == "image.png":
self.ids[f"image{colone}_{i}"].source = "image_rouge.png"
break
f”“
替换允许您在引号内添加变量的.format()
函数。您遇到了什么错误?还有什么是我把它添加到post@Antoine553self.ids.image+colonne+\u 5.source
的含义是什么?@Jaba\u 1是因为图像的id是image1\u 1(对于column=1 number=1),通过原始连接可能更容易读取。