software installation - When I 'make' Python why don't I get a 'bin' directory (or "why don't these instructions work any longer" ?)

What

I already have Python 3.4.3 installed but I want to leave that undisturbed and instead use the instructions to install another copy of Python 3 (being Python 3.6).

I'm following the second part of the instructions here : https://askubuntu.com/a/680828/257420 . Specifically I am downloading a version of Python and building it in the /opt directory.

When I execute the 'make' everything seems to work fine but having run the make in /opt/Python-3.6.4 I'm expecting to find a /opt/Python-3.6.4/bin/ and there is no such directory.

So?

Given that I don't have a bin I presume the make has failed ? Or should I be looking somewhere else for the bin because times have changed since the answer I'm following was written ?

Environment

I am attempting to build Python 3.6.4 (https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz).

This is my env

glaucon@polo ~ $ inxi -S
System:    Host: polo Kernel: 3.13.0-37-generic x86_64 (64 bit) Console: tty 4 Distro: Linux Mint 17.1 Rebecca

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EDIT: I have just completed a

find / -name "python3"

while on as root and there was no sign of (for instance) python3.6 .

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EDIT2
Here's the output from 'make' on subsequent invocations

polo Python-3.6.4 # make
running build
running build_ext
INFO: Can't locate Tcl/Tk libs and/or headers
Python build finished successfully!
The necessary bits to build these optional modules were not found:
_bz2                  _lzma                 _tkinter
To find the necessary bits, look in setup.py in detect_modules() for the module's name.
The following modules found by detect_modules() in setup.py, have been
built by the Makefile instead, as configured by the Setup files:
atexit                pwd                   time
running build_scripts
copying and adjusting /opt/Python-3.6.4/Tools/scripts/pydoc3 -> build/scripts-3.6
copying and adjusting /opt/Python-3.6.4/Tools/scripts/idle3 -> build/scripts-3.6
copying and adjusting /opt/Python-3.6.4/Tools/scripts/2to3 -> build/scripts-3.6
copying and adjusting /opt/Python-3.6.4/Tools/scripts/pyvenv -> build/scripts-3.6
changing mode of build/scripts-3.6/pydoc3 from 644 to 755
changing mode of build/scripts-3.6/idle3 from 644 to 755
changing mode of build/scripts-3.6/2to3 from 644 to 755
changing mode of build/scripts-3.6/pyvenv from 644 to 755
renaming build/scripts-3.6/pydoc3 to build/scripts-3.6/pydoc3.6
renaming build/scripts-3.6/idle3 to build/scripts-3.6/idle3.6
renaming build/scripts-3.6/2to3 to build/scripts-3.6/2to3-3.6
renaming build/scripts-3.6/pyvenv to build/scripts-3.6/pyvenv-3.6

Unfortunately the output from the first invocation of 'make' is lost and it was significantly different . Once I'm happy that my first attempt at 'make' was completely useless I will delete the /opt/Python3.6.4 directory and repeat the 'make' while capturing the output.

EDIT3
Following information from @unixpower I did a 'make clean' followed by a 'make' and the output from that command is visbile at : https://pastebin.com/Bq04MXA0 .

Unfortunately there still isn't an /opt/Python-3.6.4/bin . Just to confuse matters however I'm almost certain that the 'make' output finished somewhere differently the first time I used it than this last time !

Any comments would be welcome.

Run make install to install files to /opt/Python-3.6.4/.

Files don't have to be compiled on /opt/Python-3.6.4/ to install it there.
When running ./configure step, you can provide the target directory as the prefix.
Example:
./configure --prefix=

More information: https://askubuntu.com/a/191391/116563