[Tutor] Not returning out the series

[Rafael Skovron]

Hi as a challenge I have got to sum a series i / (i+1). My code isn't
summing right. Any ideas why?


def main():
print("{0:15s}{1:20s}".format("i","m(i)"))
for i in range(1,20):
print("{0:<15d}{1:<20.4f}".format(i,m(i)))

def m(i):
total = 0
for i in range(1,i+1,1):
total+=(i/(i+1))
return total
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Re: [Tutor] Fwd: Re: While Loop Question

[Rafael Skovron]

Thank you all I finally understood that the while code traps j and runs
independently of the for loop until while is false and a new i is picked.



On Thu, May 11, 2017 at 10:19 AM Abdur-Rahmaan Janhangeer <
arj.pyt...@gmail.com> wrote:

> sorry j is set to zero. grave typo
>
> Abdur-Rahmaan Janhangeer,
> Mauritius
> https://abdurrahmaanjanhangeer.wordpress.com
>
> On 11 May 2017 12:29 pm, "Abdur-Rahmaan Janhangeer" <arj.pyt...@gmail.com>
> wrote:
>
> >
> >
> > -- Forwarded message --
> > From: "Abdur-Rahmaan Janhangeer" <arj.pyt...@gmail.com>
> > Date: 11 May 2017 12:26 pm
> > Subject: Re: [Tutor] While Loop Question
> > To: "Rafael Skovron" <rskov...@gmail.com>
> > Cc:
> >
> > i modified your code to make it look like that :
> >
> > for i in range(1, 5):
> >
> > j=0
> > print("outer,  i=",i)
> > while j < i:
> >  print("inner, j=",j)
> >
> >  j += 1
> >
> > so it shows that each time the outer loop is reexecuted, i is set to
> zero.
> >
> > putting j at the begining completely, it is not reset to zero
> >
> > Abdur-Rahmaan Janhangeer,
> > Mauritius
> > https://abdurrahmaanjanhangeer.wordpress.com
> >
> >
> >
> >
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[Tutor] Simple while loop question

[Rafael Skovron]

I dont understand why j can have any value other than zero in this:

for i in range(1, 5):

j = 0

while j < i:

print(j, end = " ")

j += 1
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[Tutor] Is this a scope issue?

[Rafael Skovron]

This project compares two text files with parcel numbers. I think I'm
messing up the function call. I'm getting this error:

Traceback (most recent call last):
  File "amador.py", line 48, in 
remaining_parcels(auctionlist,removedlist)
NameError: name 'auctionlist' is not defined



import re

fname = 'saclisting.txt'
removed = 'removed.txt'

def get_parcel_number(fname):
#this retrieves parcel numbers from the saclisting file and stores to
auctionlist


pattern = r'^(\d{3})-(\d{3})-(\d{3})-(\d{3})'
auctionlist = []


with open(fname,'r') as file:
text = file.readlines()
for index,line in enumerate(text):
if re.search(pattern,line):
#add line to auctionlist if the pattern is found
auctionlist.append(line)
return auctionlist

def get_removed_number(removed):
#this grabs the removed parcel numbers and stores to a list
pattern = r'^(\d{3})-(\d{3})-(\d{3})-(\d{3})'
removedlist = []

with open(removed,'r') as file:
text = file.readlines()
for index,line in enumerate(text):
if re.search(pattern,line):
# add  line to removedlist
removedlist.append(line)
return removedlist

def remaining_parcels(auctionlist,removedlist):
#compares parcels in auctionlist to removedlist and returns parcels that
have not bee removed
remainingparcels =[]
for parcel in auctionlist:
if parcel not in removedlist:
remainingparcels.append(parcel)
return remainingparcels




get_parcel_number(fname)
get_removed_number(removed)
remaining_parcels(auctionlist,removedlist)
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