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#1
December 3rd, 2004, 01:37 AM
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Need help.. Reading datas..
I have a data file containing grades of made up students and i'm trying to make a program that reads this data and outputs the grades.. so how do i do that?
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#2
December 3rd, 2004, 02:46 AM
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So far i have...
Code:
import gradelist
data = gradelist.read()
entry = input("Administration Password: ")
for entry in data:
print entry[0]
if entry == 165:
print entry[0]
else:
print "Wrong password"
print "</body>"
but it says entry[0] unscriptbable object...
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#3
December 3rd, 2004, 03:02 AM
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oops that last line <body> not suppose to be there.. but what im trying to do is set a password to view the grades from the data file which i have stored in the same folder as my program... but not working
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#4
December 3rd, 2004, 04:32 AM
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Hi,
Whats this Code:
import gradelist I'm not getting it clearly. You've a text file containing just the grades or additional info too. Next is it, only authorized users r given access to view the grades or tamper with it... be more clear pls  Rgds, Subha 
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#5
December 3rd, 2004, 04:49 AM
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Sorry...
Here's what im trying to do.. I have a module already called gradelist and in this module is has 2 functions. 1.gradelist.write(list): Write the data from the grade list list to a file names grades.data in the current directory. 2. data = gradelist.read(): Read the data from grades.data and return the grade list. and what im trying to do is when the user types in 165 (that's password) it'll show all the data in the gradelist module... that clear now?
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#6
December 3rd, 2004, 05:40 AM
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Hi,
Am pretty sure u don't want the below.... u r mature enough for that one. Code:
>>> pw=input("Admin Password")
>>> data=[23,45,67,35,76]
>>> if pw!=165:
... print "Invalid Password!"
... else:
... for entry in data:
... print entry
...
23
45
67
35
76
Since u say, data gets the list...the gradelist... so cld u give an example of how the list looks... is it like an array or something? Since u r using this entry[0], am not clear with it...maybe a well-experienced person is reqd to decipher all this... but just let me try too... so all the doubt in the air wld be clear if u give a small example of how ur list looks like Subha
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#7
December 4th, 2004, 04:52 AM
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mmmk sorry am not too good with this..
but when the user types in 165, it should display this: ["userid", 10, "Comments" ] The first entry in the list is the student's userid, the second is their mark (an integer) and the last is a string containing comments. so ex: ['astudent', 100, 'Very well done.'] would be one of them..so the entire grade list would be a list of those.. and for the Code:
for entry in data:
print entry[0]
this loop will output the userids of all the students in the grade list grades. Hope this helps.. im still stuck
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#8
December 4th, 2004, 05:06 AM
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Hmmm still let me try... but I think ur program shd work fine...everythings clear except one prob
Code:
entry = input("Administration Password: ")
for entry in data:
try using a different variable to catch the password. Who knows ...may make a difference Code:
>>> gradeList=[['Dexter',100,'Excellent!'],['DeeDee',50,'Satisfactory!'],['Bubbles',20,'Poor!']] >>> gradeList [['Dexter', 100, 'Excellent!'], ['DeeDee', 50, 'Satisfactory!'], ['Bubbles', 20, 'Poor!']] >>> gradeList[0] ['Dexter', 100, 'Excellent!'] >>> for entry in gradeList: ... entry[0] ... 'Dexter' 'DeeDee' 'Bubbles' >>> Is this what u need? But I doubt  Report back! Peace, Subha
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#10
December 4th, 2004, 05:21 AM
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Hey,
since you know how to do this, wanna exchange msn (if you have it), so you could help me out? That is, if you have time, if not that's coo we can keep replying on forum.. Thanks ~!!
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#11
December 4th, 2004, 05:25 AM
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yes I do have msn. But can't use it while I'm working
I wld go with your second option...on the forum Subha
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#14
December 4th, 2004, 05:32 AM
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Code:
data = gradelist.read() this is what u had... what r the contents of data...a list of list...as my example of gradeList...if not then thats where u got to start off! Subha
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