Python 类型错误：内置操作的参数类型错误
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TypeError: bad argument type for built-in operation
提问by user8817674
I got an error TypeError: bad argument type for built-in operation . I wrote
我收到错误 TypeError: bad argument type for built-in operation 。我写
import os
import cv2
from pathlib import Path
path = Path(__file__).parent
path /= "../../img_folder"
for f in path.iterdir():
print(f)
img=cv2.imread(f)
In img=cv2.imread(f), the error happens.Is this a Python error or directory wrong error?In print(f),I think right directories can be gotten.How should I fix this?
在 img=cv2.imread(f) 中，发生错误。这是 Python 错误还是目录错误错误？在 print(f) 中，我认为可以获取正确的目录。我应该如何解决这个问题？
回答by nitred
Looks like path.iterdir()returns an object of type <class 'pathlib.PosixPath'>and not str. And cv2.imread()accepts a string filename.
看起来path.iterdir()返回一个类型的对象<class 'pathlib.PosixPath'>而不是str。并cv2.imread()接受字符串文件名。
So this fixes it:
所以这修复了它：
import os
import cv2
from pathlib import Path
path = Path(__file__).parent
path /= "../../img_folder"
for f in path.iterdir():
print(f) # <--- type: <class 'pathlib.PosixPath'>
f = str(f) # <--- convert to string
img=cv2.imread(f)
回答by Lucas Costa
path is not a object of type STRING, is a object pathLib Type, so you have to do is, on the loop, cast the value of iterator in a String object with the method str() before to pass to the imread.
path 不是 STRING 类型的对象，是一个对象 pathLib 类型，所以你必须做的是，在循环中，在传递给 imread 之前，使用 str() 方法将迭代器的值转换为 String 对象。
Like:
喜欢：
<!-- language: py-->
for pathObj in path.iterdir():
pathStr = str(pathObj)
img=cv2.imread(pathStr)
