请提供一段pathon划分训练集和训练集的代码
时间: 2023-12-10 22:04:59 浏览: 73
pathon小游戏_python小游戏_pathon_
好的,我可以提供一段Python代码分割训练集和验证集的示例代码,如下所示:
```python
import os
import random
def split_train_val(data_dir, val_ratio):
"""
分割训练集和验证集,data_dir为数据集的路径,val_ratio为验证集所占比例
"""
# 获取所有图片的路径和标签
images = []
labels = []
for label in os.listdir(data_dir):
for img in os.listdir(os.path.join(data_dir, label)):
images.append(os.path.join(data_dir, label, img))
labels.append(label)
# 随机打乱索引
len_data = len(images)
index_list = range(len_data)
random.shuffle(list(index_list))
# 划分训练集和验证集的索引
split_index = int(len_data * val_ratio)
val_index = index_list[:split_index]
train_index = index_list[split_index:]
# 根据索引获取训练集和验证集的路径和标签
train_images = [images[i] for i in train_index]
train_labels = [labels[i] for i in train_index]
val_images = [images[i] for i in val_index]
val_labels = [labels[i] for i in val_index]
return train_images, train_labels, val_images, val_labels
```
此代码可以将一个数据集按照一定比例分割成训练集和验证集,其中data_dir为数据集的路径,val_ratio为验证集所占比例。函数返回训练集和验证集图片路径和对应标签的列表。
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