installing python fails with permission denied (using sudo make install)

Question

I tried to install Python 3.6 using this tutorial: https://www.programiz.com/python-programming#run-python-os on ubuntu 14.04.

Running

$ ./configure

and

$ make

went fine. Running

$ sudo make install

gives me the following errors:

make: stat: GNUmakefile: Permission denied
make: stat: makefile: Permission denied
make: stat: Makefile: Permission denied
make: stat: install: Permission denied
make: *** No rule to make target `install'. Stop.

I know Python 3.6 is not installable via apt-get for ubuntu 14.04 yet, but this problem seems to me to be unrelated to incompatibility. Can someone help me with the installation?