Dynamic variable python in a loop

Question

I was looking through many posts here for a solution but maybe I was searching for the wrong phrase. I'm new to Python, my code problem is the following:

from yahoo_finance import Share
for line in open('fcts.txt'):
   yahoo = Share('YHOO')
   print (yahoo +'.' + line)

it should basically do the following but for every function inside fcts.txt:

from yahoo_finance import Share
yahoo = Share('YHOO')
print (yahoo.get_open())

while fcts.txt contains different functions like

get_open()
get_change()
...

I can't understand your question. What is in fcts.txt? Python functions? — GPhilo
– GPhilo, Commented Mar 7, 2017 at 11:22
Why do you have sort of weird half-code in your txt file…? Doesn't seem very sane. — deceze
– deceze ♦, Commented Mar 7, 2017 at 11:26

Alfe · Accepted Answer · 2017-03-07 11:24:54Z

1

You can access methods by name like this:

from yahoo_finance import Share

with open('fcts.txt') as methodsFile:
  for methodName in methodsFile:
    yahoo = Share('YHOO')
    method = getattr(yahoo, methodName.strip())
    print (method())

But it looks rather crude to me.

answered Mar 7, 2017 at 11:24

Alfe

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2 Comments

Alfe Over a year ago

Your fcts.txt should contain lines like get_open and get_change without the parentheses, though. If you have parentheses in the file, use methodName.strip('() \n') instead.

tripleee Over a year ago

Perhaps this answer should reinforce that while this technically works, it is completely insane to put your code in a data file. You want things the other way around.

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