CONTEST - What is the (best) solution?

[Larry Bates]

Assumptions:
1) You actually meant to have commas between each key value pair
(which your example DOES NOT have).

2) File can be read into memory

3) All the key and value variables are actually defined in the
local namespace or they are literal values instead of references
to variables.

This works:

Key11=11
Value11='V11'
Key12=12
Value12='12'
Key13=13
Value13='V13'
Key21=21
Value21='V21'
Key22=22
Value22='V22'
Key23=32
Value23='V23'
Key31=31
Value31='V31'
Key32=32
Value32='V32'
Key33=33
Value33='V33'

testdata='''
{Key11: Value11,\n
Key12: Value12,\n
Key13: Value13}\n
{Key21: Value21,\n
Key22: Value22,
Key23: Value23}\n
{Key31: Value31,\n
Key32: Value32,\n
Key33: Value33}\n
'''
#
# Or read data from a file
#
# f=open(file, 'r')
# testdata=f.read()
# f.close()
#
dictlist=testdata.replace('\n','').split('{')
firstdictstr='{'+dictlist[2]
lastdictstr='{'+dictlist[-1]

firstdict=eval(firstdictstr)
lastdict=eval(lastdictstr)

print "firstdict=", firstdict
print "lastdict=", lastdict
firstdict=eval(firstdictstr)
lastdict=eval(lastdictstr)

Larry Bates


python at hope.cz wrote:
> In a file there can be several dictionaries like this
> {Key11: Value11
> Key12: Value12
> Key13: Value13,
> ...
> ...
> Key1n:Value1n}
> {Key21: Value21
> Key22: Value22
> Key23: Value23,
> ...
> ...
> Key2n:Value2n}
> {Key31: Value31
> Key32: Value32
> Key33: Value33,
> ...
> ...
> Key3n:Value3n}
> ....
> ....
> ....
> {Keyn1: Valuen1
> Keyn2: Valuen2
> Keyn3: Value3,
> ...
> ...
> Keynn:Valuenn}
> 
> Each pair in a dictionary is separated by CRLF and in each dictionary
> numbers of pairs can be different.
> I need to read only the the first and the last dictionaries.What is a
> best solution?
> Thanks
> Lad
>