python-obspy have unmet dependencies

Hi,

When I am using :

sudo apt-get install python-obspy python3-obspy

to install obspy, it failed with such messages:

6 14.33 The following packages have unmet dependencies:
#6 14.34 python-obspy : Depends: python (>= 2.7) but it is not installable
#6 14.34 Depends: python-numpy (>= 1:1.16.0~rc1) but it is not installable
#6 14.34 Depends: python-numpy-abi9 but it is not installable
#6 14.34 Depends: python-setuptools (>= 0.6) but it is not installable
#6 14.34 Depends: python-lxml (>= 2.1) but it is not installable
#6 14.34 Depends: python-matplotlib (>= 1.1.0) but it is not installable
#6 14.34 Depends: python-scipy (>= 0.9.0) but it is not installable
#6 14.34 Depends: python-sqlalchemy but it is not installable
#6 14.34 Depends: python-tornado but it is not installable
#6 14.34 Depends: python-future (>= 0.12.4) but it is not installable
#6 14.34 Depends: python-decorator but it is not installable
#6 14.34 Depends: python-requests but it is not installable
#6 14.34 python3-obspy : Depends: python3-setuptools (>= 0.6) but it is not installable
#6 14.34 Depends: python3-lxml (>= 2.1) but it is not installable
#6 14.34 Depends: python3-scipy (>= 0.9.0) but it is not installable
#6 14.34 Depends: python3-sqlalchemy but it is not installable
#6 14.34 Depends: python3-tornado but it is not installable
#6 14.34 Depends: python3-future (>= 0.12.4) but it is not installable
#6 14.34 Depends: python3-decorator but it is not installable
#6 14.34 Depends: python3-requests but it is not installable
#6 14.35 E: Unable to correct problems, you have held broken packages.

$ uname -a
Linux zm-Precision-Tower-5810 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Does anyone know why?

Best regards

Ming Zhao

See https://github.com/obspy/obspy/issues/2530#issuecomment-572977800

T