SyntaxError: invalid syntax

[shell1986]

Hi, after installation, I get an error.

Traceback (most recent call last): File "/usr/local/bin/ffmpeg_bitrate_stats", line 7, in <module> from ffmpeg_bitrate_stats.__main__ import main File "/usr/local/lib/python2.7/dist-packages/ffmpeg_bitrate_stats/__main__.py", line 22 print(msg, file=sys.stderr) ^ SyntaxError: invalid syntax

[slhck]

This tool is not written for Python 2.7. Please upgrade to Python 3.6 or higher.

[shell1986]

pip install ffmpeg_bitrate_stats ???
why in the instructions indicate the installation for python ver 2?

[shell1986]

Traceback (most recent call last):
File "/usr/local/bin/ffmpeg_bitrate_stats", line 7, in
from ffmpeg_bitrate_stats.main import main
File "/usr/local/lib/python3.5/dist-packages/ffmpeg_bitrate_stats/main.py", line 103
print_stderr(f"Calculating frame size from {self.input_file}")
^
SyntaxError: invalid syntax