CODEWITHSUNDEEP
pythonfilefunctionpython-2.7
Lvl 1 code witch
Lvl 1 code witch

Reputation: 25

Pass file data between functions

In the abridged code that follows, I am going to obtain (a lot of) data from a file within the function OpenFile, and I want to use the data in another function, ss, without having to read the data from the file again. Is this possible and if so, how do I do it? I think it is equivalent to passing a variable between functions, but I cannot seem to get my head around that or how to apply it in this case. In advance, I am grateful for your assistance as well as your patience with my novice skills.

<3

from Tkinter import *
from tkFileDialog   import askopenfilename, asksaveasfile

def OpenFile():

    gen = []
    fam = []
    OTUs = []

    save_fam = []
    save_gen = []
    save_OTU = []

    FindIT_name = askopenfilename()
    data = open(FindIT_name, "r").readlines()

    #some data manipulation here


def ss():
    ss_file = asksaveasfile(mode="w", defaultextension=".csv")
    ss_file.write("OTU, Family, Genus")
    #I want to get data here, specifically data from FindIT_name (see OpenFile function) 

root = Tk()
root.minsize(500,500)
root.geometry("500x500")
root.wm_title("Curate Digitized Names")

menubar = Menu(root)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label="Get FindIt Input", command=OpenFile)
filemenu.add_separator()
filemenu.add_command(label="Quit", command=stop)
menubar.add_cascade(label="File", menu=filemenu)

root.config(menu=menubar)
root.mainloop()

Upvotes: 0

Views: 791

Answers (1)

Slater Victoroff
Slater Victoroff

Reputation: 21914

To be honest, that was too much code for me to really read through, but in general the way you'd want to pass the data between functions would be like this:

def foo(file_path):
    data = open(file_path, 'rb').read()
    result = bar(data)

def bar(data):
    ### do something to data

For applying to your original example something like this would work:

def OpenFile():

gen = []
fam = []
OTUs = []

save_fam = []
save_gen = []
save_OTU = []

FindIT_name = askopenfilename()
ss(FindIT_name)
data = open(FindIT_name, "r").readlines()

#some data manipulation here


def ss(FindIT_name):
    ss_file = asksaveasfile(mode="w", defaultextension=".csv")
    ss_file.write("OTU, Family, Genus")
    ### If you need to do something, you now have FindIT_name available.

Upvotes: 1

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