CODEWITHSUNDEEP
pythonstring-formatting
Chris Carter
Chris Carter

Reputation: 21

Formatting python calculation variables to print, using one string

SharesPurchased = 2000
PricePaid = 40
Commission = .03
SellPrice = 42.75

TotalPricePaid = SharesPurchased * PricePaid
CommissionPaid = TotalPricePaid * Commission
TotalSellPrice = SellPrice * SharesPurchased
CommissionSellPaid = TotalSellPrice * Commission
ProfitIfAny = TotalSellPrice - TotalPricePaid - CommissionPaid - 
CommissionSellPaid

print ("""
Joe paid {} for his shares.
Joe paid () to his broker for purchases.
Joe sold his shares for {}
Joe paid {} to his broker for selling his shares.
Joe made a total of {}
"""
       ).format([TotalPricePaid, CommissionPaid, TotalSellPrice, CommissionSellPaid, ProfitIfAny])

Here's my spaghetti of code. I'm trying to figure this out for my first actual assignment in python. I can't seem to figure out how to get the assigned variables to pop into text without having to make 5 seperate print("").f lines in a row.

This is what I've produced for a working version : 

print("Joe paid {} for his shares.").format(TotalPricePaid)
print("Joe paid {} to his broker for purchases.").format(CommissionPaid)
print("Joe sold his shares for {}").format(TotalSellPrice)
print("Joe paid {} to his broker for selling his 
shares.").format(CommissionSellPaid)
print("Joe made a total of {}.").format(ProfitIfAny)

Upvotes: 0

Views: 381

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1122222

You are passing in one argument to str.format(), a list:

....format([TotalPricePaid, CommissionPaid, TotalSellPrice, CommissionSellPaid, ProfitIfAny])

You need to pass in separate arguments instead. Remove the [...] list brackets.

You are also using () in one location where you probably wanted CommisionPaid to be interpolated:

Joe paid () to his broker for purchases.

Replace those () with {}

Next, you are applying the .format() method to whatever print() returns, which is always None. Use the .format() call on the string, not the print() call, and pass the result to print():

print ("""
...""".format(...))

The following works:

print ("""
Joe paid {} for his shares.
Joe paid {} to his broker for purchases.
Joe sold his shares for {}
Joe paid {} to his broker for selling his shares.
Joe made a total of {}
""".format(TotalPricePaid, CommissionPaid, TotalSellPrice, CommissionSellPaid, ProfitIfAny))

or, slightly better formatted:

print("""\
Joe paid {} for his shares.
Joe paid {} to his broker for purchases.
Joe sold his shares for {}
Joe paid {} to his broker for selling his shares.
Joe made a total of {}
""".format(
    TotalPricePaid, CommissionPaid, TotalSellPrice,
    CommissionSellPaid, ProfitIfAny))

Upvotes: 3

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