package libpython3.9-minimal 3.9.0~rc1-1+bionic1 failed to install/upgrade: trying to overwrite '/usr/lib/python3.9/typing.py', which is also in package libpython3.9-stdlib:amd64 3.9.0~rc1-1+bionic1

[Satya Narayan Sahu]

this error occures while updating

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: libpython3.9-minimal 3.9.0~rc1-1+bionic1
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Nov 6 21:46:48 2020
DuplicateSignature:
 package:libpython3.9-minimal:3.9.0~rc1-1+bionic1
 Unpacking libpython3.9-stdlib:amd64 (3.9.0-5~20.04) over (3.9.0~rc1-1+bionic1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-OGm6IL/04-libpython3.9-stdlib_3.9.0-5~20.04_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/python3.9/_sysconfigdata__linux_x86_64-linux-gnu.py', which is also in package libpython3.9-minimal:amd64 3.9.0~rc1-1+bionic1
ErrorMessage: trying to overwrite '/usr/lib/python3.9/typing.py', which is also in package libpython3.9-stdlib:amd64 3.9.0~rc1-1+bionic1
InstallationDate: Installed on 2020-09-13 (53 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: python3.9
Title: package libpython3.9-minimal 3.9.0~rc1-1+bionic1 failed to install/upgrade: trying to overwrite '/usr/lib/python3.9/typing.py', which is also in package libpython3.9-stdlib:amd64 3.9.0~rc1-1+bionic1
UpgradeStatus: Upgraded to focal on 2020-10-02 (34 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Brian Murray (brian-murray)]

This is not a version of python3.9 from the official Ubuntu archives.

 $ rmadison python3.9
 python3.9 | 3.9.5-3ubuntu0~20.04.1 | focal-security/universe | source, amd64, arm64, armhf, i386, ppc64el, riscv64, s390x
 python3.9 | 3.9.5-3ubuntu0~20.04.1 | focal-updates/universe | source, amd64, arm64, armhf, i386, ppc64el, riscv64, s390x
 python3.9 | 3.9.7-2build1 | impish | source, amd64, arm64, armhf, i386, ppc64el, riscv64, s390x
 python3.9 | 3.9.10-2 | jammy | source, amd64, arm64, armhf, i386, ppc64el, riscv64, s390x