[Tutor] Removing certain sequences from a string list elements

[Hugo Arts]

On Sat, Jan 7, 2012 at 2:08 AM, Varsha Purohit <varsha.purohit at gmail.com> wrote:
> Hello,
>
> I have a simple python program where I am comparing two log files and I am
> storing the differences in a list. I am programming in python after a long
> time so may be I might have not written something very efficient. Please let
> me know what alternate solution I can apply for my program.
>
> I am reading each line in the file individually and storing them in a list.
> After that i am comparing the two lists and printing out the differences.
> But I wanted to know how can I iter through each string in the list and
> remove certain sequences like \n and ',' comma. I want to basically printout
> a column where it has each element of the list in each row. It should also
> avoid priting the time stamp since they will be different anyway. i want the
> program as simple as it looks right now.
>
> Input file contains something like this in each line. I have not included
> the complete log file.
>
> MegaMon> mfc
> MFC data:
>     vendorId/deviceId=1000/005b, subVendorId/subDeviceId=1000/9285, OEM=1,
> SubOem=1, isRaidKeySecondary=0
>     MFCF: disableSAS=0, maxDisks=0, enableRaid6=1, disableWideCache=0
>     disableRaid5=0, enableSecurity=0, enableReducedFeatureSet=0
>     enableCTIO=0 enableSnapshot=1 enableSSC=1 enableCacheOffload=0
>     maxHANodes=2
>
>
> here is the program
>
> def readList1():
>     f1 = open('mfc_node1.txt',"r")
>     lines = f1.read().split(" ")
>     q = []
>     for line in lines:
>         if not line in q:
>             q.append(line)
>     f1.close()
>     return q
>
> def readList2():
>     f = open('mfc_node2.txt',"r")
>     lines = f.read().split(" ")
>     p = []
>     for line in lines:
>         if not line in p:
>             p.append(line)
>     f.close()
>     return p
>
>

These two functions should be one function that takes a filename as
argument. They are exactly the same. For removing commas and newlines,
you should google the str.strip() method.