https://stackoverflow.com/questions/1602934/check-if-a-given-key-already-exists-in-a-dictionary

.

https://stackoverflow.com/questions/53513/how-do-i-check-if-a-list-is-empty

.

https://stackoverflow.com/questions/415511/how-to-get-the-current-time-in-python

.

https://stackoverflow.com/questions/273192/how-can-i-safely-create-a-nested-directory-in-python

.

https://stackoverflow.com/questions/3207219/how-do-i-list-all-files-of-a-directory

.

https://stackoverflow.com/questions/522563/accessing-the-index-in-for-loops

.

https://stackoverflow.com/questions/1602934/check-if-a-given-key-already-exists-in-a-dictionary

.

https://stackoverflow.com/questions/510348/how-can-i-make-a-time-delay-in-python

.

.

https://stackoverflow.com/questions/3277503/how-to-read-a-file-line-by-line-into-a-list

.

https://stackoverflow.com/questions/379906/how-do-i-parse-a-string-to-a-float-or-int-in-python

.

https://stackoverflow.com/questions/3437059/does-python-have-a-string-contains-substring-method

.

Thu Dec 26 2019 15:35:22 GMT+0000 (UTC) https://www.geeksforgeeks.org/sort-an-array-without-changing-position-of-negative-numbers/

Thu Dec 26 2019 18:45:53 GMT+0000 (UTC) https://leetcode.com/problems/letter-combinations-of-a-phone-number/

Sun Dec 29 2019 19:13:40 GMT+0000 (UTC) http://norvig.com/spell-correct.html

Wed Jan 01 2020 19:00:00 GMT+0000 (UTC) https://www.python-course.eu/towers_of_hanoi.php

Wed Jan 01 2020 19:00:00 GMT+0000 (UTC) http://code.activestate.com/recipes/578140-super-simple-sudoku-solver-in-python-source-code/

Thu Jan 02 2020 19:00:00 GMT+0000 (UTC) https://en.wikipedia.org/wiki/PageRank

Thu Jan 02 2020 19:00:00 GMT+0000 (UTC) https://docs.python.org/3.4/library/html.parser.html

Fri Jan 10 2020 19:00:00 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/unfold/

Thu Jan 09 2020 19:00:00 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/compose/

Sat Jan 11 2020 20:54:48 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/when/

Wed Jan 22 2020 18:52:28 GMT+0000 (UTC) https://docs.python.org/3/library/datetime.html#datetime.datetime.strptime

Thu Feb 06 2020 19:00:00 GMT+0000 (UTC)

Sun Feb 16 2020 18:21:25 GMT+0000 (UTC)

Fri Feb 21 2020 18:02:15 GMT+0000 (UTC)

Fri Feb 21 2020 22:36:19 GMT+0000 (UTC)

Mon Mar 23 2020 07:13:49 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/max-by/

Mon Mar 30 2020 07:07:27 GMT+0000 (UTC) https://stackoverflow.com/questions/89228/calling-an-external-command-from-python

Mon Mar 30 2020 07:50:40 GMT+0000 (UTC) 1. https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s.

Mon Mar 30 2020 10:16:54 GMT+0000 (UTC) https://www.amazon.com/Learn-Python-Hard-Way-Introduction/dp/0321884914

Mon Mar 30 2020 12:04:52 GMT+0000 (UTC) https://www.amazon.com/Learn-Python-Hard-Way-Introduction/dp/0321884914

Mon Mar 30 2020 12:10:17 GMT+0000 (UTC) https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s

Mon Mar 30 2020 12:18:27 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/unfold/

Mon Mar 30 2020 12:23:56 GMT+0000 (UTC) https://www.tutorialspoint.com/python/nested_if_statements_in_python.htm

Tue Mar 31 2020 05:18:11 GMT+0000 (UTC)

Tue Mar 31 2020 05:21:34 GMT+0000 (UTC) https://www.programiz.com/python-programming/methods/list/remove

Tue Mar 31 2020 05:29:39 GMT+0000 (UTC)

Tue Mar 31 2020 05:32:45 GMT+0000 (UTC)

Tue Mar 31 2020 05:43:21 GMT+0000 (UTC) https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s

Tue Mar 31 2020 06:23:25 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Tue Mar 31 2020 11:27:37 GMT+0000 (UTC)

Tue Mar 31 2020 11:35:03 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Tue Mar 31 2020 11:40:31 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Tue Mar 31 2020 11:54:39 GMT+0000 (UTC) ttps://www.programiz.com/python-programming/while-loop

Mon Apr 20 2020 13:17:59 GMT+0000 (UTC) https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s

Mon Apr 20 2020 13:32:07 GMT+0000 (UTC) https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s

Mon Apr 20 2020 13:38:08 GMT+0000 (UTC) https://www.30secondsofcode.org/python/s/compose/

Mon Apr 20 2020 13:45:46 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Mon Apr 20 2020 13:58:55 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Tue Apr 21 2020 05:10:22 GMT+0000 (UTC) https://www.amazon.com/Learn-Python-Hard-Way-Introduction/dp/0321884914

Tue Apr 21 2020 05:22:45 GMT+0000 (UTC) https://stackoverflow.com/questions/5844672/delete-an-element-from-a-dictionary

Tue Apr 21 2020 05:36:09 GMT+0000 (UTC) https://www.freecodecamp.org/news/python-example/

Tue Apr 21 2020 05:48:50 GMT+0000 (UTC)

Tue Apr 21 2020 06:12:11 GMT+0000 (UTC) https://beginnersbook.com/2018/01/python-while-loop/

Tue Apr 21 2020 06:18:35 GMT+0000 (UTC) .https://www.youtube.com/watch?v=rfscVS0vtbw&t=5s

Tue Apr 21 2020 06:29:54 GMT+0000 (UTC) https://www.programiz.com/python-programming/methods/list/append

Tue Apr 21 2020 06:34:03 GMT+0000 (UTC) https://learnandlearn.com/python-programming/python-reference/python-remove-list-all-items-clear-function-with-examples

Tue Apr 21 2020 06:41:13 GMT+0000 (UTC) https://docs.python.org/3/tutorial/controlflow.html

Tue Apr 21 2020 10:34:57 GMT+0000 (UTC) https://www.amazon.com/Learn-Python-Hard-Way-Introduction/dp/0321884914

Tue Apr 21 2020 11:15:59 GMT+0000 (UTC) https://www.amazon.com/Learn-Python-Hard-Way-Introduction/dp/0321884914

Tue Apr 21 2020 11:45:29 GMT+0000 (UTC) https://towardsdatascience.com/30-helpful-python-snippets-that-you-can-learn-in-30-seconds-or-less-69bb49204172

Tue Apr 21 2020 12:00:59 GMT+0000 (UTC)

Thu May 07 2020 16:15:18 GMT+0000 (UTC) https://www.analyticsvidhya.com/blog/2020/04/how-to-read-common-file-formats-python/

Mon May 11 2020 13:44:16 GMT+0000 (UTC) https://stackoverflow.com/questions/15501673/how-to-temporarily-disable-a-foreign-key-constraint-in-mysql

Mon May 11 2020 22:20:25 GMT+0000 (UTC) https://scikit-learn.org/stable/modules/generated/sklearn.metrics.f1_score.html

Tue May 12 2020 22:59:54 GMT+0000 (UTC) https://stackoverflow.com/questions/50486643/get-path-of-parent-keys-and-indices-in-dictionary-of-nested-dictionaries-and-l

Fri May 15 2020 06:32:03 GMT+0000 (UTC) https://stackoverflow.com/questions/1060279/iterating-through-a-range-of-dates-in-python

Fri May 15 2020 09:11:04 GMT+0000 (UTC) https://stackoverflow.com/questions/53460391/passing-a-date-as-a-url-parameter-to-a-flask-route

Sat May 16 2020 20:45:33 GMT+0000 (UTC) https://jakevdp.github.io/PythonDataScienceHandbook/01.07-timing-and-profiling.html

Mon May 25 2020 09:24:31 GMT+0000 (UTC) https://stackoverflow.com/questions/441147/how-to-subtract-a-day-from-a-date

Tue May 26 2020 16:35:55 GMT+0000 (UTC)

Wed May 27 2020 15:04:56 GMT+0000 (UTC) https://stackoverflow.com/questions/17351016/set-up-python-simplehttpserver-on-windows

Wed May 27 2020 17:25:40 GMT+0000 (UTC) https://cmdlinetips.com/2018/01/how-to-read-entire-text-file-in-python/

Thu May 28 2020 21:57:47 GMT+0000 (UTC) https://stackoverflow.com/questions/11923317/creating-django-forms

Fri May 29 2020 11:31:25 GMT+0000 (UTC) https://stackoverflow.com/questions/62084911/how-to-replace-values-of-each-cell-on-a-dataframe-without-looping-it

Fri May 29 2020 11:32:47 GMT+0000 (UTC) https://stackoverflow.com/questions/62084831/merge-a-single-list-of-dictionaries-with-the-same-key-value

Fri May 29 2020 11:34:17 GMT+0000 (UTC) https://stackoverflow.com/questions/62084501/how-to-save-multiple-plots-as-seperate-png-files-with-names-in-python