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pip installs python library under wrong version of python

On the Linux Mint O.S. I used pip to install the CherryPy module. However it installed it under python2.7 in :
/home/jacslim/.local/lib/python2.7/site-packages/cherrypy
rather than under Python 3.6 which I found in /usr/bin/python3.6,
I tried again in the Pyton3.6 directory but the same thing happened.
Is there anyway I can direct pip to use the latest version of the Python interpreter?

Use pip3 install to install for python 3

pip is usually in the same bin directory as your python, so make sure you just specify the correct bin housing your pip installation.
I use anaconda and my Python 2.7 is installed in:
/anaconda2/bin/
To get pip installs specific to that Python, I therefore use:
/anaconda2/bin/pip [name_of_thing_to_install]

Pip error: Fatal error in launcher: Unable to create process using '"'

I've seen many threads about this, and have tried all options except for completely wiping Python off of my machine and re-downloading everything...
I'm using a Windows 10, 64-bit machine, and had already downloaded Python2.7. Commands like 'C:\>pip install seaborn' were not an issue.
I recently downloaded Python3.6, and now my pip will not work - it returns the error in the title.
I have added C:\Python27, C:\Python36, C:\Python27\Scripts, C:\Python36\Scripts to my Path, and still it won't work.
If I type in the command C:\>python27 -m pip install seaborn, however, the pip works. I am really confused why I can no longer just type in pip install and have it work.
Thanks in advance!

You have two versions of Python added to path. To differentiate between 2.7 and 3.6 you have to tell it which version you want otherwise each pip conflicts with the other (it does not know what to install and where) in other words you type pip you could either mean for Python 2 or for Python 3.
Do not rename pip it will break your system (you should not need to rename). Instead use those already provided..
Your system should have these already:
pip is universal. Best for one installation.
pip3 for Python 3. Best to distinguish between Python 2 and 3
pip3.6 to distinguish between different Python 3 installations.
The same goes for Python 2 installation.
pip, pip2 and pip2.7.
You need to use either pip3 (or pip2) or pip3.6 (or pip2.7) to install in future. This will allow the different versions to be recognised:
For Python 2:
pip2 install seaborn
For Python 3:
pip3 install seaborn
You should also now use shebang lines as well now (if you are not already) to distinguish between versions.

the issue is the ambiguity between the two pip that you've mentioned in the Environments. As you mentioned the issue only started occurring when you installed python3 on the same system where python2 was installed and both have pip and hence when you fire up pip in your cmd, Windows System isn't able to pick one out of the two.
Why does your C:>python27 -m pip install seaborn work?
Well it's quite simple, since you've mentioned the python27 there, windows knows exactly which pip you're talking about.
How to fix it?
see the edits for this section. (I tried this, it didn't work) Removed it from the final answer to avoid confusion.
Alternatively, what you can do is,
rename your python.exe for python 3 to python3. Don't forget to put it inside your PATH environment. Just use python for python 2, python3 for python 3.
Their pip are separated, pip for python 2. pip3 for python 3.
Now, run and see the below commands behave:
# will return the default version of pip
pip --version
# will use the Python 2 version of pip
pip2 --version
# will use the Python 3 version of pip
pip3 --version

Okay so I finally worked it out...
I uninstalled Python3.6 and deleted all relevant folders.
I then went to Control Panel>Programs>Progams and Features and repaired my Python2.7 program. pip works now (I think it got messed up since I tried to rename the universal pip.exe file -> don't do that!!).
After re-downloading Python3.6, I put my universal pip.exe download from Python3 in a different directory so the Path would not get it confused. I now have Paths for both pip2 and pip3 and all is okay.
Thanks for your help!

This is how I solved this issue on my end: (short answer, remove this folder C:\Python27)
Problem: I installed python 3, after uninstalling python 2.7. The issue here is that pip remains behind even after you uninstall python 2.7.
Solution:
1. Uninstall python 3 (if you have it installed).
2. Just in case, I would uninstall python 2.7.
3. This is the key: go to C:\Python27 ... and delete the entire directory (which also contains pip).
This solution is good for those that are fine with ONLY running Python 3 on their machines (which was my case).

Installation: Reportlab: "ImportError: No module named reportlab.lib"

I've installed reportlab, via
pip install reportlab
(also tried via
easy_install reportlab
)
..but I get the above error. There are other RL imports before that - it's the .lib that it's objecting to. I've had RL working great in the past, but IT reimaged my computer, and I'm trying to rebuild it. The script works fine, but there's something funky with the RL install, I think.
Reportlab: 3.3.0

Most of the times errors like this are caused by an broken package, either in the package it self or in one of it's dependencies.
The best way to resolve such a issue is to force-reinstall the package, it will reinstall the package and its dependencies potentially repairing the package.
To force-reinstall reportlab use:
pip install --upgrade --force-reinstall reportlab

If the above solution doesn't work for you then make sure you dont have any other module named reportlab.py in your current directory.
Another alternative you can do this in windows commandline
pip uninstall reportlab
then create an account for reportlab here is the link https://www.reportlab.com/accounts/register/
then copy paste this in the windows commandline
pip install -ihttps://www.reportlab.com/pypi -U reportlab
when it prompts you for a user and password use the one you just registered

Download the latest version of python, ensure it's a 64-bit python package, and change the python interpreter in VSC.
View - Command Pallette - Type "Select Interpreter" - Click it and choose for example "Python 3.8.0 64-bit"
It's also a good idea to install the latest version:
pip install reportlab==3.6.11

Check if you have 2 versions of Python - That is 2.7 and 3 - in which case you would need to run pip3 instead of pip to run Python3 code

The best way to install ReportLab is use their .exe installer. They have installers for 32bit and 64bit.
https://pypi.org/project/reportlab/2.7/

may be you are missing the module try below command for the same:
pip install --upgrade --force-reinstall reportlab

How to install pip in python 3.4 on windows?

I'm really struggling at installing any python modules (e.g six, yahoo_finance) because they require pip to be installed, but I don't know whether I have pip already or how to install it. Once its installed I don't know what command to type in and where to type it in. Can I install these modules any other way without pip?
I am only a beginner, so sorry if this is a bit basic.
Thanks in advance

pip comes already bundled with python 3.4 It will be in your scripts directory C:\Python34\Scripts\
Add it to your Environment variables and you can run it from any directory or else open the directory mentioned above in command prompt and run pip install ... to install whatever you want

First, make sure you have it installed, if not follow the instructions below. Type which pip, and if it doesn't list an URL, it means it's not installed yet.
Go here https://bootstrap.pypa.io/get-pip.py and download the file.
Then open terminal and go to your downloads folder (or wherever you downloaded it to) and type python get-pip.py to execute the script. If you get an error that says OSError: Permission Denied, or something similar, run it with administrator permissions.
If the installation is successful, you should now have pip installed on your computer. Type pip --version to make sure you have it installed.
To install six and yahoo_finance, type:
pip install six
and
pip install yahoo-finance
If something goes wrong update your question.

From Installing Python Modules:
pip is the preferred installer program. Starting with Python 3.4, it is included by default with the Python binary installers.
Emphasis mine
If you already installed it by default you should be able to use it.
Just open the command line and type python -m pip install SomePackage.

Installing numpy for Python 2.7 while also having Python 3.4 installed?

I have both Python 2.7 and Python 3.4 (and have to have both because for the class I'm running, students have the option of using either). One student has used Python 2.7 and numpy for their project, but when I attempt to install numpy, it installs it to 3.4. I need to install it to 2.7.
I'm using numpy 1.9 from this site, which I'm told is also 2.7-specific: http://sourceforge.net/projects/numpy/files/NumPy/
However, nonetheless it still goes to the 3.4 folder. Copying it to Python 2.7 didn't work, obviously.
How do I do this?

I recommend installing with pip.
pip install numpy
If this doesn't work on windows then download the binary from http://www.lfd.uci.edu/~gohlke/pythonlibs/ and convert it to a wheel before installing.
pip install wheel
wheel convert path/to/binary
pip install numpy_wheel
Pip is recommended because you can uninstall.
To check where you are installing to
pip -V
You may have an environmental variable path to the wrong pip.

Assuming that you are using, or at least you should use pip to install the library. You can specify the python version to be installed by changing the suffix, e.g. pip-2.7 install numpy.
pip install numpy
pip-2.7 install numpy
pip-3.4 install numpy
As an alternative, in case that you do not want to use pip is to download and install the library using setup with a similar technique.
python setup.py install
python2.7 setup.py install
python3.4 setup.py install

Your PATH isn't setup correctly.
C:> where pip
Should tell you which pip it is trying to use, and it is likely whichever one it found on your PATH first...
So, instead, you will want to run it as
C:> C:\mypython2install\pip.exe install numpy
Or, setup your path correctly. See here

Just one other note on issues like this. I had a similar problem with Python 2.7 libraries not being found, because I had miniconda installed for a Python virtual environment that was hijacking calls to python from other programs. After deleting the minconda directory in my home the problem went away and python libraries that were properly installed were found again.

Note-This answer is particularly for Windows PC which has both Python2 & Pyhton3 installed on it.
Both the versions of Python has their different directories somewhat like
"C:\Python27\" ----for python2
"C:\Python35\" ---- for python3
*(or it depends on what path you chose while installing Python**)*
pip GENERALLY exist under the directory "C:\Python**\Scripts"
there you can find exe files like:
pip.exe/pip2.exe/pip2.7.exe ----for python2
pip3.exe/pip3.5.exe ----for python3
to install packages on python2:
use
Python27\Scripts\pip2.exe install package_name
(where the 1st argument is the path of exe file, it might differ for your system)
to install packages on python3:
use
Python35\Scripts\pip3.exe install package_name
there is no need to uninstall any version of python to achieve the task.