文件目录
这里介绍如何加载目录中的所有文档。
在底层，默认情况下使用 UnstructuredLoader
from langchain.document_loaders import DirectoryLoader
我们可以使用 glob 参数来控制要加载的文件。请注意，这里不加载 .rst 文件或 .html 文件。
loader = DirectoryLoader('../', glob="**/*.md")
docs = loader.load()
len(docs)
1
显示进度条
默认情况下，不会显示进度条。要显示进度条，请安装 tqdm 库（如 pip install tqdm），并将 show_progress 参数设置为 True。
loader = DirectoryLoader('../', glob="**/*.md", show_progress=True)
docs = loader.load()
Requirement already satisfied: tqdm in /Users/jon/.pyenv/versions/3.9.16/envs/microbiome-app/lib/python3.9/site-packages (4.65.0)
0it [00:00, ?it/s]
使用多线程 （Use multithreading）
默认情况下，加载操作在一个线程中进行。为了利用多个线程，将 use_multithreading 标志设置为 True。
loader = DirectoryLoader('../', glob="**/*.md", use_multithreading=True)
docs = loader.load()
更改加载器类
默认情况下使用 UnstructuredLoader 类。但是，您可以相当容易地更改加载器的类型。
from langchain.document_loaders import TextLoader
loader = DirectoryLoader('../', glob="**/*.md", loader_cls=TextLoader)
docs = loader.load()
len(docs)
1
如果需要加载 Python 源代码文件，请使用 PythonLoader。
from langchain.document_loaders import PythonLoader
loader = DirectoryLoader('../../../../../', glob="**/*.py", loader_cls=PythonLoader)
docs = loader.load()
len(docs)
691
使用 TextLoader 自动检测文件编码
在这个示例中，我们将看到一些在使用 TextLoader 类从目录加载一系列任意文件时可能有用的策略。
首先为了说明问题，让我们尝试加载多个具有任意编码的文本。
path = '../../../../../tests/integration_tests/examples'
loader = DirectoryLoader(path, glob="**/*.txt", loader_cls=TextLoader)
A. 默认行为
loader.load()
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"><span style="color: #800000; text-decoration-color: #800000">╭─────────────────────────────── </span><span style="color: #800000; text-decoration-color: #800000; font-weight: bold">Traceback </span><span style="color: #bf7f7f; text-decoration-color: #bf7f7f; font-weight: bold">(most recent call last)</span><span style="color: #800000; text-decoration-color: #800000"> ────────────────────────────────╮</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #bfbf7f; text-decoration-color: #bfbf7f">/data/source/langchain/langchain/document_loaders/</span><span style="color: #808000; text-decoration-color: #808000; font-weight: bold">text.py</span>:<span style="color: #0000ff; text-decoration-color: #0000ff">29</span> in <span style="color: #00ff00; text-decoration-color: #00ff00">load</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">26 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span>text = <span style="color: #808000; text-decoration-color: #808000">""</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">27 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">with</span> <span style="color: #00ffff; text-decoration-color: #00ffff">open</span>(<span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.file_path, encoding=<span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.encoding) <span style="color: #0000ff; text-decoration-color: #0000ff">as</span> f: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">28 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">try</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span>29 <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ </span>text = f.read() <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">30 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">except</span> <span style="color: #00ffff; text-decoration-color: #00ffff">UnicodeDecodeError</span> <span style="color: #0000ff; text-decoration-color: #0000ff">as</span> e: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">31 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.autodetect_encoding: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">32 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ </span>detected_encodings = <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.detect_file_encodings() <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #bfbf7f; text-decoration-color: #bfbf7f">/home/spike/.pyenv/versions/3.9.11/lib/python3.9/</span><span style="color: #808000; text-decoration-color: #808000; font-weight: bold">codecs.py</span>:<span style="color: #0000ff; text-decoration-color: #0000ff">322</span> in <span style="color: #00ff00; text-decoration-color: #00ff00">decode</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 319 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ </span><span style="color: #0000ff; text-decoration-color: #0000ff">def</span> <span style="color: #00ff00; text-decoration-color: #00ff00">decode</span>(<span style="color: #00ffff; text-decoration-color: #00ffff">self</span>, <span style="color: #00ffff; text-decoration-color: #00ffff">input</span>, final=<span style="color: #0000ff; text-decoration-color: #0000ff">False</span>): <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 320 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f"># decode input (taking the buffer into account)</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 321 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span>data = <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.buffer + <span style="color: #00ffff; text-decoration-color: #00ffff">input</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span> 322 <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span>(result, consumed) = <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>._buffer_decode(data, <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.errors, final) <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 323 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f"># keep undecoded input until the next call</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 324 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span><span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.buffer = data[consumed:] <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f"> 325 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">return</span> result <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">╰──────────────────────────────────────────────────────────────────────────────────────────────────╯</span>
<span style="color: #ff0000; text-decoration-color: #ff0000; font-weight: bold">UnicodeDecodeError: </span><span style="color: #008000; text-decoration-color: #008000">'utf-8'</span> codec can't decode byte <span style="color: #008080; text-decoration-color: #008080; font-weight: bold">0xca</span> in position <span style="color: #008080; text-decoration-color: #008080; font-weight: bold">0</span>: invalid continuation byte
<span style="font-style: italic">The above exception was the direct cause of the following exception:</span>
<span style="color: #800000; text-decoration-color: #800000">╭─────────────────────────────── </span><span style="color: #800000; text-decoration-color: #800000; font-weight: bold">Traceback </span><span style="color: #bf7f7f; text-decoration-color: #bf7f7f; font-weight: bold">(most recent call last)</span><span style="color: #800000; text-decoration-color: #800000"> ────────────────────────────────╮</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> in <span style="color: #00ff00; text-decoration-color: #00ff00"><module></span>:<span style="color: #0000ff; text-decoration-color: #0000ff">1</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span>1 loader.load() <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">2 </span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #bfbf7f; text-decoration-color: #bfbf7f">/data/source/langchain/langchain/document_loaders/</span><span style="color: #808000; text-decoration-color: #808000; font-weight: bold">directory.py</span>:<span style="color: #0000ff; text-decoration-color: #0000ff">84</span> in <span style="color: #00ff00; text-decoration-color: #00ff00">load</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">81 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.silent_errors: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">82 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ │ </span>logger.warning(e) <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">83 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">else</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span>84 <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">raise</span> e <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">85 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">finally</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">86 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> pbar: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">87 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ │ </span>pbar.update(<span style="color: #0000ff; text-decoration-color: #0000ff">1</span>) <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #bfbf7f; text-decoration-color: #bfbf7f">/data/source/langchain/langchain/document_loaders/</span><span style="color: #808000; text-decoration-color: #808000; font-weight: bold">directory.py</span>:<span style="color: #0000ff; text-decoration-color: #0000ff">78</span> in <span style="color: #00ff00; text-decoration-color: #00ff00">load</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">75 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> i.is_file(): <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">76 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> _is_visible(i.relative_to(p)) <span style="color: #ff00ff; text-decoration-color: #ff00ff">or</span> <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.load_hidden: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">77 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">try</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span>78 <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span>sub_docs = <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.loader_cls(<span style="color: #00ffff; text-decoration-color: #00ffff">str</span>(i), **<span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.loader_kwargs).load() <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">79 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span>docs.extend(sub_docs) <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">80 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">except</span> <span style="color: #00ffff; text-decoration-color: #00ffff">Exception</span> <span style="color: #0000ff; text-decoration-color: #0000ff">as</span> e: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">81 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">if</span> <span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.silent_errors: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #bfbf7f; text-decoration-color: #bfbf7f">/data/source/langchain/langchain/document_loaders/</span><span style="color: #808000; text-decoration-color: #808000; font-weight: bold">text.py</span>:<span style="color: #0000ff; text-decoration-color: #0000ff">44</span> in <span style="color: #00ff00; text-decoration-color: #00ff00">load</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">41 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">except</span> <span style="color: #00ffff; text-decoration-color: #00ffff">UnicodeDecodeError</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">42 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">continue</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">43 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">else</span>: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #800000; text-decoration-color: #800000">❱ </span>44 <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">raise</span> <span style="color: #00ffff; text-decoration-color: #00ffff">RuntimeError</span>(<span style="color: #808000; text-decoration-color: #808000">f"Error loading {</span><span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.file_path<span style="color: #808000; text-decoration-color: #808000">}"</span>) <span style="color: #0000ff; text-decoration-color: #0000ff">from</span> <span style="color: #00ffff; text-decoration-color: #00ffff; text-decoration: underline">e</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">45 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">except</span> <span style="color: #00ffff; text-decoration-color: #00ffff">Exception</span> <span style="color: #0000ff; text-decoration-color: #0000ff">as</span> e: <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">46 </span><span style="color: #7f7f7f; text-decoration-color: #7f7f7f">│ │ │ │ </span><span style="color: #0000ff; text-decoration-color: #0000ff">raise</span> <span style="color: #00ffff; text-decoration-color: #00ffff">RuntimeError</span>(<span style="color: #808000; text-decoration-color: #808000">f"Error loading {</span><span style="color: #00ffff; text-decoration-color: #00ffff">self</span>.file_path<span style="color: #808000; text-decoration-color: #808000">}"</span>) <span style="color: #0000ff; text-decoration-color: #0000ff">from</span> <span style="color: #00ffff; text-decoration-color: #00ffff; text-decoration: underline">e</span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">│</span> <span style="color: #7f7f7f; text-decoration-color: #7f7f7f">47 </span> <span style="color: #800000; text-decoration-color: #800000">│</span>
<span style="color: #800000; text-decoration-color: #800000">╰──────────────────────────────────────────────────────────────────────────────────────────────────╯</span>
<span style="color: #ff0000; text-decoration-color: #ff0000; font-weight: bold">RuntimeError: </span>Error loading ..<span style="color: #800080; text-decoration-color: #800080">/../../../../tests/integration_tests/examples/</span><span style="color: #ff00ff; text-decoration-color: #ff00ff">example-non-utf8.txt</span>
</pre>
文件 example-non-utf8.txt 使用了不同的编码，load() 函数会失败，并显示一条有用的消息指示哪个文件解码失败。
使用 TextLoader 的默认行为，任何一个文档加载失败，整个加载过程都将失败，并且不会加载任何文档。
B. 静默失败
我们可以将参数 silent_errors 传递给 DirectoryLoader，以跳过无法加载的文件并继续加载过程。
loader = DirectoryLoader(path, glob="**/*.txt", loader_cls=TextLoader, silent_errors=True)
docs = loader.load()
Error loading ../../../../../tests/integration_tests/examples/example-non-utf8.txt
doc_sources = [doc.metadata['source'] for doc in docs]
doc_sources
['../../../../../tests/integration_tests/examples/whatsapp_chat.txt',
'../../../../../tests/integration_tests/examples/example-utf8.txt']
C. 自动检测编码
We can also ask TextLoader to auto detect the file encoding before failing, by passing the autodetect_encoding to the loader class.
text_loader_kwargs={'autodetect_encoding': True}
loader = DirectoryLoader(path, glob="**/*.txt", loader_cls=TextLoader, loader_kwargs=text_loader_kwargs)
docs = loader.load()
doc_sources = [doc.metadata['source'] for doc in docs]
doc_sources
['../../../../../tests/integration_tests/examples/example-non-utf8.txt',
'../../../../../tests/integration_tests/examples/whatsapp_chat.txt',
'../../../../../tests/integration_tests/examples/example-utf8.txt']