Is there a simple way to write multiple lines to a text file?

Question

I'm writing this bookstore program that reads a text file, you place your order, and then it writes your receipt to a different text file. I wrote the whole thing forgetting I needed to write the receipt to a separate file. What is the best/easiest way for me to write this entire module to another file?

def receipt():
    sum=0.0
    print("\n\n")
    print("*"*70)
    print("\tThank you {} for your purchase at The Book 
    Store!".format(name))
    print("*"*70)
    print("\nQty\t\tItem\t\tPrice\t\tTotal\n")
    for i in range(len(myBooks)):
        print(myBooks[i][0],"\t",myBooks[i][1],"\t",myBooks[i][2],"\t\t",myCost[i])
    for number in myCost:
        sum = sum + number

    print("\n\nSubtotal:     ${}".format(sum))
    tax = round(sum * .076,2)
    total = round(sum + tax,2)
    print("Tax:          ${}".format(tax))
    print("Total:        ${}".format(total))

"What is the best/easiest way for me to write this ENTIRE module to another file?" - uh, what? I think you may have the wrong idea about what the word "module" means. — user2357112, Dec 07 '18 at 00:22
Do you mean to write all the things you're printing in the receipt file? — Aurora Wang, Dec 07 '18 at 00:23
Possible duplicate of [write multiple lines in a file in python](https://stackoverflow.com/questions/21019942/write-multiple-lines-in-a-file-in-python) — U13-Forward, Dec 07 '18 at 00:24
U9-Forward if that is the same then I guess I just dont understand it. Would I need to clarify each one as "line 1","line 2", etc? or would it be more of pyhon already knows what I mean?? Im giving myself a headache! — Cara, Dec 07 '18 at 00:36

score 0 · Answer 1 · answered Dec 07 '18 at 03:04

You should have a string to contain all receipt information:

def receipt():
    str=''
    str += '\n\n'
    ....
    return str

Then you can call it like:

with open("bill.txt", "w") as bill:
    bill.write(receipt())
bill.close()

And I saw you also have some problems here are you doesn't push the name and myBooks to receipt(). Make sure it's not your problem when you run your script.

score -2 · Accepted Answer · answered Dec 07 '18 at 00:34

-2

Try this. I can't run your script because no variables are defined

output = receipt()
file = open("sample.txt","w")
file.write(output)
file.close()

answered Dec 07 '18 at 00:34

Jlim2377

61
7

I was so excited when I saw this! then I tried it and got this: file.write(output) TypeError: write() argument must be str, not None – Cara Dec 07 '18 at 00:45
OK!! So this did work!! The only thing I had to change was output= str(receipt()) for the very first line. THANK YOU!! I'm to new to upvote it otherwise I would've – Cara Dec 07 '18 at 00:57
2

Sorry, since the `receipt()` function doesn't return anything, this answer could not possibly work—not even with what @Cara, the OP, claims have fixed it by doing. – martineau Dec 07 '18 at 02:31

Is there a simple way to write multiple lines to a text file?

2 Answers2