Invalid syntax issue

[nikhila05]

Traceback (most recent call last):
File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main
"main", mod_spec)
File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.5/dist-packages/imongo/main.py", line 2, in
from .kernel import MongoKernel
File "/usr/local/lib/python3.5/dist-packages/imongo/kernel.py", line 165
spawn_cmd = ['mongo', f'--eval "{prompt_cmd}; {dir_func}"']
^
SyntaxError: invalid syntax

[gusutabopb]

Could you please elaborate a bit more?

[semarf]

I have the same issue, on Ubuntu 16.04, cannot start the kernel , this loops in the logs:

[I 19:03:57.050 NotebookApp] KernelRestarter: restarting kernel (4/5) WARNING:root:kernel 5895ffb2-24cb-4a4e-ab4d-b66d28032354 restarted Traceback (most recent call last): File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main "__main__", mod_spec) File "/usr/lib/python3.5/runpy.py", line 85, in _run_code exec(code, run_globals) File "/usr/local/lib/python3.5/dist-packages/imongo/__main__.py", line 2, in <module> from .kernel import MongoKernel File "/usr/local/lib/python3.5/dist-packages/imongo/kernel.py", line 165 spawn_cmd = ['mongo', f'--eval "{prompt_cmd}; {dir_func}"'] ^ SyntaxError: invalid syntax

[gusutabopb]

IMongo only support Python 3.6+. Both @semarf and @nikhila05 seem to be using Python 3.5, which doesn't support f-strings. I will update the docs to make sure this is more explicit. In the meantime, please let me know if you have any problems with Python 3.6.