Python [Errno 22]将文件从一个文件夹复制到另一个文件夹时参数无效[重复]答案

【问题标题】：Python [Errno 22] Invalid argument when copy a file from one folder to another [duplicate]Python [Errno 22]将文件从一个文件夹复制到另一个文件夹时参数无效[重复]
【发布时间】：2021-03-04 00:29:19
【问题描述】：

我正在使用视频教程中的文件。一开始，它开始通过将输入图像数据的文件复制到各个文件夹中来传播它们。该代码在教程中有效，但我想知道为什么会出现以下错误：

[Errno 22] 无效参数：'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train\cat.1.jpg'

这里是代码。首先它会创建目录。（catdogKaggle\train 包含输入图像）：

import os, shutil
# The path to the directory where the original
# dataset was uncompressed
original_dataset_dir = 'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train'

# The directory where we will
# store our smaller dataset
base_dir = 'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\catORdog'

os.mkdir(base_dir)

# Directories for our training,
# validation and test splits
train_dir = os.path.join(base_dir, 'train')
os.mkdir(train_dir)
validation_dir = os.path.join(base_dir, 'validation')
os.mkdir(validation_dir)
test_dir = os.path.join(base_dir, 'test')
os.mkdir(test_dir)

# Directory with our training cat pictures
train_cats_dir = os.path.join(train_dir, 'cats')
os.mkdir(train_cats_dir)

# Directory with our training dog pictures
train_dogs_dir = os.path.join(train_dir, 'dogs')
os.mkdir(train_dogs_dir)

# Directory with our validation cat pictures
validation_cats_dir = os.path.join(validation_dir, 'cats')
os.mkdir(validation_cats_dir)

# Directory with our validation dog pictures
validation_dogs_dir = os.path.join(validation_dir, 'dogs')
os.mkdir(validation_dogs_dir)

# Directory with our test cat pictures
test_cats_dir = os.path.join(test_dir, 'cats')
os.mkdir(test_cats_dir)

# Directory with our test dog pictures
test_dogs_dir = os.path.join(test_dir, 'dogs')
os.mkdir(test_dogs_dir)

然后将图像复制到最近创建的文件夹中：

# Copy first 1000 cat images to train_cats_dir
fnames = ['cat.{}.jpg'.format(i) for i in range(1,1000)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(train_cats_dir, fname)
    shutil.copyfile(src, dst)

# Copy next 500 cat images to validation_cats_dir
fnames = ['cat.{}.jpg'.format(i) for i in range(1000, 1500)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(validation_cats_dir, fname)
    shutil.copy(src, dst)
    
# Copy next 500 cat images to test_cats_dir
fnames = ['cat.{}.jpg'.format(i) for i in range(1500, 2000)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(test_cats_dir, fname)
    shutil.copyfile(src, dst)
    
# Copy first 1000 dog images to train_dogs_dir
fnames = ['dog.{}.jpg'.format(i) for i in range(1000)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(train_dogs_dir, fname)
    shutil.copyfile(src, dst)
    
# Copy next 500 dog images to validation_dogs_dir
fnames = ['dog.{}.jpg'.format(i) for i in range(1000, 1500)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(validation_dogs_dir, fname)
    shutil.copyfile(src, dst)
    
# Copy next 500 dog images to test_dogs_dir
fnames = ['dog.{}.jpg'.format(i) for i in range(1500, 2000)]
for fname in fnames:
    src = os.path.join(original_dataset_dir, fname)
    dst = os.path.join(test_dogs_dir, fname)
    shutil.copyfile(src, dst)

当我运行这部分时，我收到以下错误：

OSError: [Errno 22] 无效参数：'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train\cat.1.jpg'

【问题讨论】：

您是否尝试过在路径中使用双斜线？
可能是因为您在base_dir 和original_dataset_dir 中使用了反斜杠。将它们替换为正斜杠/，因为反斜杠用于字符串中的转义序列。
@ZavenZareyan 或者用原始文字 (r) 作为字符串前缀

标签： python shutil python-os

【解决方案1】：

您在 Windows 上，这就是为什么您需要转义反斜杠或使用 raw strings 来存储文件路径，即：

original_dataset_dir = r'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train'

base_dir = r'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\catORdog'

或

original_dataset_dir = 'D:\\Machine Learning\\Deep Learning\\SRU-deeplearning-workshop-master\\catdogKaggle\\train'

base_dir = 'D:\\Machine Learning\\Deep Learning\\SRU-deeplearning-workshop-master\\catdogKaggle\\catORdog'

【讨论】：

【解决方案2】：

“\t”字符有特殊含义[TAB]。要么将所有反斜杠加倍，以逃避单斜杠。或者您可以使用如下的原始字符串。

original_dataset_dir = 'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train'
print(original_dataset_dir)

original_dataset_dir = r'D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train'
print(original_dataset_dir)

输出：

D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle rain
D:\Machine Learning\Deep Learning\SRU-deeplearning-workshop-master\catdogKaggle\train

【讨论】：