1

I want to run a python file multiple times and change input values every time it's run. The input values, in this case, is a website address and two date spans with a given start date and a given end date.

Example:

I want to loop through and run this file with different dates up to 12 months back.

The file

Iteration 1, todays date and the first date of the current month: 

run -i 'file.py' 'https://www.example.com/' '2019-09-01' '2019-09-12'

Iteration 2, the first date of last month and the last date of last month:

run -i 'file.py' 'https://www.example.com/' '2019-08-01' '2019-08-31'

Iteration 3:

run -i 'file.py' 'https://www.example.com/' '2019-07-01' '2019-07-31'

...

Keep on iterating 12 months back

I've already managed to build a for loop that generates the dates but i'm having troubles to incorporate the python file.

for i in {1..12}; do 
    echo $(date -I -d "2019-09-01 -$i months")
done

Output:

2019-08-01
2019-07-01
2019-06-01
2019-05-01
2019-04-01
2019-03-01
2019-02-01
2019-01-01
2018-12-01
2018-11-01
2018-10-01
2018-09-01
Amessihel
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Bob Harris
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2 Answers2

0

You can try this

run -i 'file.py' 'https://www.example.com/' '2019-09-01' '2019-09-12'
for i in {1..12}; do 
    run -i 'file.py' 'https://www.example.com/' '`echo $(date -I -d "2019-09-01 -$i months")`' '`echo $(date -I -d "2019-09-31 -$i months")`'
done

You can use backticks (`) to evaluate a command and substitute in the command's output, like in your case, the dates.

A better way to do this would be to call the python script from another script (assuming you are the one who wrote the first script).

MePsyDuck
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  • Nice, but won't start with the second argument as being the current date (`2019-09-12`). – Amessihel Sep 12 '19 at 12:01
  • You can have one statement to run for the current month and one loop for rest of the months. Edited my answer. – MePsyDuck Sep 12 '19 at 12:28
  • Not yet, you hard coded the current date and your backsticks won't be evaluated since they are enclosed by simple quotes. :) – Amessihel Sep 12 '19 at 20:36
0

You could use the code below:

d1=$(date '+%Y-%m-01')
d2=$(date '+%Y-%m-%d')
for i in {1..12}; do 
    run -i 'file.py' 'https://www.example.com/' $d1 $d2
    d2=$(date -d "$d1 -1 day"  '+%Y-%m-%d')
    d1=$(date -d "$d2" '+%Y-%m-01')
done

Explanation:

  • we begin with the first day as d1 and the current one of the current month as d2.
  • for each iteration, we deduce d2 from the previous date d1, which is the first day of the previous month, by subtracting one day.

The following command lines will be executed:

run -i file.py 'https://www.example.com/' 2019-09-01 2019-09-12
run -i file.py 'https://www.example.com/' 2019-08-01 2019-08-31
run -i file.py 'https://www.example.com/' 2019-07-01 2019-07-31
run -i file.py 'https://www.example.com/' 2019-06-01 2019-06-30
run -i file.py 'https://www.example.com/' 2019-05-01 2019-05-31
run -i file.py 'https://www.example.com/' 2019-04-01 2019-04-30
run -i file.py 'https://www.example.com/' 2019-03-01 2019-03-31
run -i file.py 'https://www.example.com/' 2019-02-01 2019-02-28
run -i file.py 'https://www.example.com/' 2019-01-01 2019-01-31
run -i file.py 'https://www.example.com/' 2018-12-01 2018-12-31
run -i file.py 'https://www.example.com/' 2018-11-01 2018-11-30
run -i file.py 'https://www.example.com/' 2018-10-01 2018-10-31
Amessihel
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