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python - 该系统找不到指定的路径：

问题描述

以下是我读取 dicom 文件的代码，但我在读取文件时遇到问题，任何帮助将不胜感激

<import cv2
import pydicom as dicom            # for reading dicom files
import os                          # for doing directory operations 
import pandas as pd                # for some simple data 
import matplotlib.pyplot as plt
import matplotlib.image as mpimage
import numpy as np

data_dir = r'D:\project\New folder\LungNoduleDetectionClassification-master'
patients = os.listdir(data_dir)
labels_df = pd.read_csv(r'D:\project\New folder\LungNoduleDetectionClassification-master\stage1_labels.csv', index_col=0)

labels_df.head()

import matplotlib.pyplot as plt

for patient in patients[:1]:
    path = data_dir + patient
    slices = [dicom.read_file(path + '/' + s) for s in os.listdir(path)]
    slices.sort(key = lambda x: int(x.ImagePositionPatient[2]))

    plt.imshow(slices[0].pixel_array)
    plt.show()>

Error :-

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-39-0cdfa4febaf1> in <module>
      3 for patient in patients[:1]:
      4     path = data_dir + patient
----> 5     slices = [dicom.read_file(path + '/' + s) for s in os.listdir(path)]
      6     slices.sort(key = lambda x: int(x.ImagePositionPatient[2]))
      7 

FileNotFoundError: [WinError 3] The system cannot find the path specified: 'D:\\project\\New folder\\LungNoduleDetectionClassification-master1-001.dcm'

注意 1-001.dcm 是一个 dicom 文件

标签： pythonjupyter-notebook

解决方案

您的目录名和文件名的组合有问题：

data_dir = r'D:\project\New folder\LungNoduleDetectionClassification-master'
patients = os.listdir(data_dir)
...
for patient in patients[:1]:
    path = data_dir + patient

这意味着path包含目录名和文件名，没有目录分隔符来分隔它们。

通常，您希望执行以下操作以确保正确组合两者：

    path = os.path.join(data_dir, patient)

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