By default, the log file itself is located in platform-specific locations, as shown below:

Platform

Log File Path

Mac OSX

~/.local/log/pymbs/pymbs.log

Linux

~/.local/log/pymbs/pymbs.log

Windows

C:\Users\<user>\AppData\Local\pymbs\pymbs.log

If you would like to specify your own log file location, you can specify the location with the PYMBS_LOG_FILE environment variable.