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I installed Ubuntu 20.04 on a PC. I then tried to get started and install pip for python3. However nothing seemed to work. This is what I have tried so far:

sudo apt install python3-pip

This is the error I get:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package python3-pip is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python3-pip' has no installation candidate

I have tried the solution proposed by Carlos Sanchez JR.: How to install Python package installer PIP on Ubuntu 20.04 Linux

After following the advice given in the link above I got this error when doing sudo apt update :

Ign:1 cdrom://Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423) focal InRelease
Hit:2 cdrom://Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423) focal Release
Hit:4 http://security.ubuntu.com/ubuntu focal-security InRelease              
Hit:6 http://archive.ubuntu.com/ubuntu focal InRelease                        
Get:5 http://kali.download/kali kali-rolling InRelease [30.5 kB]
Hit:7 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Err:5 http://kali.download/kali kali-rolling InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
Get:8 http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease [30.5 kB]
Err:8 http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
Reading package lists... Done
W: GPG error: http://kali.download/kali kali-rolling InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
E: The repository 'http://http.kali.org/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
E: The repository 'http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Trying sudo apt install python3-pip at this point just gives me the same E: Package 'python3-pip' has no installation candidate error as before. This is equally true when trying sudo apt-get install python3-pip.

I have found no other solutions to this problem.

Biochem
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10 Answers10

39

Try this command

sudo apt-get install python3-pip

Note: If you have a fresh install, you need to do this first before trying the above command.

sudo apt-get update

G.Pavan Kumar
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23

Try the following commands:

sudo apt-get install python3-setuptools
sudo python3 -m easy_install install pip
python3 -m pip --version
kenorb
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  • this is the only way on a live cd. apt update has nothing at cdrom://... and python3-pip is not ready yet. But setuptools and easy_install can bring pip3 to work – Sam Mar 30 '21 at 12:08
  • This worked for me. – Daniel Dec 07 '21 at 15:50
12

It means you have a fresh install.

try this:

sudo apt-get update

Then just use the below commands, it works fine.

sudo apt-get install python3-setuptools
sudo python3 -m easy_install install pip
python3 -m pip --version
Jimit Vaghela
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Developer-Felix
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7

You need to enable the universe repository to install the official package for this.

$ sudo add-apt-repository universe
$ sudo apt-get install python3-pip
fuzzyTew
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2

I faced the same problem on the AWS EC2. A simple sudo apt update solved the problem.

T Hansda
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    If you read the full question (and links provided) you will see it is one of the things I tried. Looking back I think it was probably some sort of hardware problem. – Biochem Jul 17 '20 at 18:01
  • `sudo apt update` fixed it for me on a new Ubuntu Server 20.04 instance on AWS. – Nathan Griffiths Mar 11 '21 at 19:22
1

From the error info of the apt-get update. That is caused by the kali apt source. The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6

You can run following command at first

wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add

or

apt-key adv --keyserver hkp://keys.gnupg.net --recv-keys ED444FF07D8D0BF6
dpkg --configure -a

Then you can run following commands to install pip.

sudo apt-get update
sudo apt install python3-pip
JokeMay
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0

This might work:

python3 -m pip3 install -U pip3

or:

python3 -m pip install -U pip
TheAlphaReturns
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  • I tried this. It gave me an error. I ended up just installing another version of Ubuntu instead. Now it works just fine. – Biochem Jun 11 '20 at 16:24
0

I had pretty much the same issue on Ubuntu 19.04. Seems the repositories for this version had issues with sudo apt update ... ip addresses and repositories where not resolvingl

As I was doing this in a vm, I installed Ubuntu 16.04 and everything worked as it should without issues.

Follow these steps https://docs.python-guide.org/starting/install3/linux/

And then this works.

sudo apt install python3-pip

Hillsie
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0

Method 1:

To install pip, securely download get-pip.py using curl:

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

Then run the following command in the folder where you have downloaded get-pip.py:

python get-pip.py

Warning Be cautious if you are using a Python install that is managed by your operating system or another package manager. get-pip.py does not coordinate with those tools, and may leave your system in an inconsistent state.

Method 2:

Be cautious using this method, but it worked for me:

cd ~
rm -rf .local
rm -rf .cache
sudo apt get python3-pip
Daniel Goldfarb
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0

It worked for me(with @G.Pavan Kumar help):

Step1: sudo apt-get update

Step2: sudo apt-get install python3-pip

Step3: sudo apt-get update (tried to update but i guess didn't go well so i tried to fix the missing updates in the following step)

Step4: sudo apt-get update --fix-missing

Enis Cinari
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