MetaPhlAn Version Verification Error

Symptom

When verifying the installed MetaPhlAn version, a message is displayed indicating that _bz2 is not found.

Key Process and Cause Analysis

The dependencies are missing.

Conclusion and Solution

1. Install bzip2 (see Installing Python) and then compile and install Python again.
2. Reinstall MetaPhlAn. For details, see Installing MetaPhlAn.