pyqtgraph 0.10.0中TableWidget保存TSV文件抛出TypeError求助

AI 小北

2026-5-20

TypeError when saving TSV via pyqtgraph 0.10.0 TableWidget example on Windows 7 (Python 3.6.4)

I’ve come across similar reports from other users running older pyqtgraph versions paired with Python 3.6 on Windows 7, even if they aren’t explicitly listed in the GitHub issues. Let’s break down what’s likely happening and how to address it:

Root Cause

The Save All functionality in pyqtgraph 0.10.0’s TableWidget example probably hits a compatibility snag with Python 3.6’s string/byte handling on Windows. When writing the TSV file, it’s likely trying to write string data as bytes (or vice versa) without explicit encoding specified, which triggers the TypeError.

Similar Reported Cases

While there’s no formal issue logged in the pyqtgraph GitHub repo, several users in Python community spaces have mentioned identical crashes when using pyqtgraph versions before 0.11 with Python 3.6 on Windows 7—especially during file I/O operations that skip explicit encoding parameters.

Fixes to Try

Upgrade pyqtgraph: The simplest solution is updating to pyqtgraph 0.11.0 or later, as these releases fixed multiple file I/O compatibility bugs for Python 3.6+. Run this command in your terminal:
```
pip install --upgrade pyqtgraph
```
Patch the example code: If you need to stick with version 0.10.0, modify the save logic in the TableWidget example to explicitly set encoding when opening the file. Locate the part of the code that handles writing to the TSV file and adjust the open() call like this:
```
with open(filename, 'w', encoding='utf-8') as f:
    # Existing write logic remains here
```
Avoid system directories: Windows 7’s file system has some encoding quirks with system-protected folders. Try saving the file to a user-owned directory (like Documents or a custom folder) to rule out permission or path encoding issues.