Metaflow 2.0.0 executing HelloFlow Unknown user about metaflow HOT 6 CLOSED

I am trying to run metaflow-tutorials on local mac.
after

pip install metaflow
metaflow
cd 00-helloworld 
python 00-helloworld/helloworld.py show

It shows the error

Metaflow could not determine your user name based on environment variables ($USERNAME etc.)

Did't I miss some step?
thanks

you can export USERNAME='your-name' to resolve this problem，see：

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@ponggung
They get resolved in the following order:

METAFLOW_USER
SUDO_USER
USERNAME
USER

So, as to @meibenjin 's point, try exporting something to any of them.

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@meibenjin @savingoyal
Thanks for your help~
export USERNAME='your-name' works for me.
I build app with docker, so some environmental variables are empty.

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I don't know if this is the same issue but I wondering why this occurs, if the $USERNAME is already exported. This is on OS X, so USERNAME should be set by the OS:

➜  metaflow-tutorials python 01-playlist/playlist.py show
Metaflow 2.0.0 executing PlayListFlow    Unknown user:
    Metaflow could not determine your user name based on environment variables ($USERNAME etc.)

➜  metaflow-tutorials echo $USERNAME                        
amarch

However when I export in the current shell, it resolves the issue. I'm not sure why the python env would not have the login env.

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@ponggung Yes, @meibenjin and @tduffy000 are correct with their recommendations. That should get you going.

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@ponggung Please close this issue once you get unblocked. Thanks in advance.

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