Hello Huy,
Had a similar issue before I had admin rights in our rigs, the solution at that time was to manually download the numpy binaries for the plataform (or copy them from an existing similar machine) and add the folder to the local Python path variable (a.k.a PYTHONPATH).
Additionally, if you want to execute a local version of python (or a system Python2 or Python3) you could also add the shebang ( "#!") to top of the telemac *.py files using gedit or any editor pointing to the desired version of Python e.g.,:
#!/path/to/local/python python
Note that the "default recommended" line is:
To assure it gets the "default" python in the machine (not your case though).
Python nor its modules explicitly need to have root/admin rights to its installation or use.
regards,
José Díaz.