Python - install matplotlib - python3 with tkinter in Ubuntu

Step 1: Install matplotlib
Step 2: Install tkinter

Step 1: Install matplotlib

(python3runs01) $ pip3 install matplotlib
Collecting matplotlib
  Downloading https://files.pythonhosted.org/packages/71/07/16d781df15be30df4acfd536c479268f1208b2dfbc91e9ca5d92c9caf673/matplotlib-3.0.2-cp36-cp36m-manylinux1_x86_64.whl (12.9MB)
    100% |████████████████████████████████| 12.9MB 115kB/s 
Collecting python-dateutil>=2.1 (from matplotlib)
  Using cached https://files.pythonhosted.org/packages/74/68/d87d9b36af36f44254a8d512cbfc48369103a3b9e474be9bdfe536abfc45/python_dateutil-2.7.5-py2.py3-none-any.whl
Collecting numpy>=1.10.0 (from matplotlib)
  Downloading https://files.pythonhosted.org/packages/7b/74/54c5f9bb9bd4dae27a61ec1b39076a39d359b3fb7ba15da79ef23858a9d8/numpy-1.16.0-cp36-cp36m-manylinux1_x86_64.whl (17.3MB)
    100% |████████████████████████████████| 17.3MB 85kB/s 
Collecting kiwisolver>=1.0.1 (from matplotlib)
  Downloading https://files.pythonhosted.org/packages/69/a7/88719d132b18300b4369fbffa741841cfd36d1e637e1990f27929945b538/kiwisolver-1.0.1-cp36-cp36m-manylinux1_x86_64.whl (949kB)
    100% |████████████████████████████████| 952kB 1.4MB/s 
Collecting pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 (from matplotlib)
  Downloading https://files.pythonhosted.org/packages/de/0a/001be530836743d8be6c2d85069f46fecf84ac6c18c7f5fb8125ee11d854/pyparsing-2.3.1-py2.py3-none-any.whl (61kB)
    100% |████████████████████████████████| 71kB 3.6MB/s 
Collecting cycler>=0.10 (from matplotlib)
  Using cached https://files.pythonhosted.org/packages/f7/d2/e07d3ebb2bd7af696440ce7e754c59dd546ffe1bbe732c8ab68b9c834e61/cycler-0.10.0-py2.py3-none-any.whl
Collecting six>=1.5 (from python-dateutil>=2.1->matplotlib)
  Cache entry deserialization failed, entry ignored
  Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Collecting setuptools (from kiwisolver>=1.0.1->matplotlib)
  Using cached https://files.pythonhosted.org/packages/bf/ae/a23db1762646069742cc21393833577d3fa438eecaa59d11fb04fa57fcd5/setuptools-40.7.1-py2.py3-none-any.whl
Installing collected packages: six, python-dateutil, numpy, setuptools, kiwisolver, pyparsing, cycler, matplotlib
Successfully installed cycler-0.10.0 kiwisolver-1.0.1 matplotlib-3.0.2 numpy-1.16.0 pyparsing-2.3.1 python-dateutil-2.7.5 setuptools-40.7.1 six-1.12.0
$


Step 2: Install tkinter in ubuntu

(python3runs01) $ sudo apt-get install python3-tk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  blt libtcl8.6 libtk8.6 tk8.6-blt2.5
Suggested packages:
  blt-demo tcl8.6 tk8.6 tix python3-tk-dbg
The following NEW packages will be installed:
  blt libtcl8.6 libtk8.6 python3-tk tk8.6-blt2.5
0 upgraded, 5 newly installed, 0 to remove and 105 not upgraded.
Need to get 2,252 kB of archives.
After this operation, 9,233 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 libtcl8.6 amd64 8.6.8+dfsg-3 [881 kB]
Get:2 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 libtk8.6 amd64 8.6.8-4 [693 kB]
Get:3 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 tk8.6-blt2.5 amd64 2.5.3+dfsg-4 [572 kB]
Get:4 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 blt amd64 2.5.3+dfsg-4 [4,944 B]
Get:5 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3-tk amd64 3.6.7-1~18.04 [100 kB]
Fetched 2,252 kB in 2s (1,329 kB/s) 
Selecting previously unselected package libtcl8.6:amd64.
(Reading database ... 224648 files and directories currently installed.)
Preparing to unpack .../libtcl8.6_8.6.8+dfsg-3_amd64.deb ...
Unpacking libtcl8.6:amd64 (8.6.8+dfsg-3) ...
Selecting previously unselected package libtk8.6:amd64.
Preparing to unpack .../libtk8.6_8.6.8-4_amd64.deb ...
Unpacking libtk8.6:amd64 (8.6.8-4) ...
Selecting previously unselected package tk8.6-blt2.5.
Preparing to unpack .../tk8.6-blt2.5_2.5.3+dfsg-4_amd64.deb ...
Unpacking tk8.6-blt2.5 (2.5.3+dfsg-4) ...
Selecting previously unselected package blt.
Preparing to unpack .../blt_2.5.3+dfsg-4_amd64.deb ...
Unpacking blt (2.5.3+dfsg-4) ...
Selecting previously unselected package python3-tk:amd64.
Preparing to unpack .../python3-tk_3.6.7-1~18.04_amd64.deb ...
Unpacking python3-tk:amd64 (3.6.7-1~18.04) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Setting up libtcl8.6:amd64 (8.6.8+dfsg-3) ...
Setting up libtk8.6:amd64 (8.6.8-4) ...
Setting up tk8.6-blt2.5 (2.5.3+dfsg-4) ...
Setting up blt (2.5.3+dfsg-4) ...
Setting up python3-tk:amd64 (3.6.7-1~18.04) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
(python3runs01) $


Let us now test by running the program in the following stackoverflow question:
https://stackoverflow.com/questions/31726643/how-do-i-get-multiple-subplots-in-matplotlib