I run thic code and it works. THank you very much.
The error report shows this:
Traceback (most recent call last):
File “/usr/lib/python3.7/py_compile.py”, line 143, in compile
_optimize=optimize)
File “”, line 791, in source_to_code
File “”, line 219, in _call_with_frames_removed
File “./prog.py”, line 4
is
^
SyntaxError: invalid syntax
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File “”, line 1, in
File “/usr/lib/python3.7/py_compile.py”, line 147, in compile
raise py_exc
py_compile.PyCompileError: File “./prog.py”, line 4
is
^
SyntaxError: invalid syntax