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flask: command not found - flask 0.12 [closed]

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Closed 5 years ago.
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I have just installed a fresh copy of Ubuntu 16.04 LTS, and installed flask using pip3 install flask. When I run pip3 list Flask 0.12 appears in the list.
However, when I attempt to run flask, I get the error flask: command not found.
I have also installed using pip and not pip3 but to no avail. Any suggestions?

Fixed by running python3 -m flask.

Windows:
pip install flask
MacOS:
sudo pip install flask
Raspberry Pi:
sudo apt-get install flask

How to update python 2.7 to 3.5 on a freeNAS os [closed]

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Closed 6 years ago.
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I have tried pip, easy_install, pkg update, pkg install, and building from source and all have failed. All I want to do is be able to have python 3.5 run and I am getting desperate at this point.

Is your freeNAS server the kind that is built on Debian?
If so you can try:
sudo apt-get update
sudo apt-get install python3.5
See:
https://askubuntu.com/questions/682869/how-do-i-install-newer-python-versions-using-apt-get
If the above doesn't work, try posting here the output from these commands:
uname -a
cat /etc/issue
cat /proc/version

How do I install pip on arch linux? [closed]

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Closed 8 years ago.
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I untarred this: python-pip-1.5.6-2-any.pkg.tar.xz
tar -xf python-pip-1.5.6-2-any.pkg.tar.xz
and it made a usr folder
with subfolders bin, lib, and share
inside bin is pip, pip3, and pip3.4
How the heck am I supposed to run makepkg?
I don't know how to install this.

pacman -S python-pip should also work.
The current version in the repository is 1.5.6-2
NOTE: for python 2.7 you would need to install python2-pip instead of python-pip.

Does the instruction here work for you? https://pip.pypa.io/en/latest/installing.html
so basically:
curl -O https://bootstrap.pypa.io/get-pip.py
python get-pip.py

I am not able to install python purl package? [closed]

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I am using Ubuntu and not able to install purl packages. I use pip and the github unstable version to install, but none works and it says permission denied.
How do I install purl package from Pypi. I need help.
Also, how are the different ways of installing packages like these other than apt-get and pip?

For installing system-wide packages, you need root rights, so try sudo pip install purl. You could also use virtualenv so you don't need to be root:
$ virtualenv venv
$ . venv/bin/activate
(venv)$ pip install purl

There's no purl on Ubuntu official repository, so you can install it by pip, using sudo command:
sudo pip install purl

Mercurial and python 2.6 [closed]

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Closed 10 years ago.
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I try to install mercurial on a centos vps-server with "yum install mercurial" but it says it needs python2.4 in order to install it. I have python2.6 installed. Is there a way to get past this?

You should not have messed with your system Python --
it is incrdible you can still login at all. Python 2.4 is ancient, but it is what is used in a lot of CentOS versions in the wild - what is installed by it's package management. Maybe you had installed a ",meta package" taht upgrades the system Python to 2.6, along with everything that depends on it (yum included).
Anyway, 2.4 would be sub-optimal to install mercurial.
Since your system is a mess already, you can simply easy_install mercurial into your system Python instead of trying to use yum for it.
"sudo easy_install mercurial" -- if you don't have easy_install, try "yum install setuptools" first. If this does not work, search on pipy.python.org for setuptools, install it manually - -and think seriously on rebuilding this machinne - you will have to do it soon.