Hello!
On 9/13/07, Varsha Purohit <[EMAIL PROTECTED]> wrote:
> Hello friends,,
> I have a problem in displaying data which i have invoked from
> class. City is the name of the class which i havent displayed here. There is
> another script using that class. It has a function name setCities which
> takes a text file as argument. Text file contains name of the city, x and y
> location. there are 4 datas in 4 different lines. Code is as follows.
>
> import City
>
> def setCities(inFile):
> # puts city.txt content into City class objects
> # the field order of input file is: name x y x, y are integers. data
> are in newlines.
> f = open(inFile, 'r')
> body = f.readlines()
> f.close()
> cities = [] # list of cities
> for row in body:
> cityData = row.strip().split()
> cityName = cityData[0]
> cityX = cityData[1]
> cityY = cityData[2]
> newCity = City(cityName, cityX, cityY) # city class is invoked
> cities.append(newCity)
> return cities
>
>
> abc = setCities("C:\MS\sem5\Lab2_scripts\cities.txt") #
> setCities function will return the array with values read from the file.
> print abc
>
> I am getting output like
> [<city.City instance at 0x023E82D8>, <city.City instance at 0x023E8300>,
> <city.City instance at 0x023E8350>, <city.City instance at 0x023E83C8>]
>
> I want the data and not the instance... what should i do ??
Well, that depends on the City class. When you print a list, it just
calls repr() on each item in the list and prints that. Now, suppose
there is a method printCity() in the City class for printing the city
data. In that case you should probably just loop over the list of
instances and call the method, like this:
>>> abc = setCities("city file")
>>> for city in abc:
... city.printCity()
If there is no such method, maybe you can extract the data from the
class and write your own printing function, or modify the class to add
one.
HTH,
Kalle
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