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Original Version: Authored in Chinese by myself

Accuracy Advisory: Potential discrepancies may exist between translations

Precedence: The Chinese text shall prevail in case of ambiguity

Feedback: Technical suggestions regarding translation quality are welcomed

Problem Analysis

Original Version: Authored in Chinese by myself
Accuracy Advisory: Potential discrepancies may exist between translations
Precedence: The Chinese text shall prevail in case of ambiguity
Feedback: Technical suggestions regarding translation quality are welcomed

Possible issues with package upgrades or uninstallations related to spyder dependencies.
After upgrading PyQt5 to version 5.15, conflicts occurred since spyder requires PyQt5<5.13, causing startup failures.

Solution

Open Anaconda Prompt and execute:

1

pip install spyder

Explanation:
pip automatically installs dependency-compatible packages. For example, when installing spyder (which requires PyQt5<5.13), pip detects the installed PyQt5 5.15 and downgrades to the highest compatible version (PyQt5 5.12.3, the latest version below 5.13).

20210923 EDIT:
If encountering “Access Denied” errors, add the --user option.