def marginals(year, cutoff, printout = True) :
# This is a simple analysis which prints out the list of marginals after each
# election. I.e. if you would like to know which seats were marginals going into
# 1997, modulo boundary changes, ask for the marginals after 1992. The analysis
# can be given a cutoff for what you would like to consider a marginal
if printout :
print
print '------------------------------------------------------------'
print 'Retreiving marginals below',cutoff+"%",'for',year
print '------------------------------------------------------------'
print
seats = []
for constituency in outputdatabase :
if constituency == "elections" : continue
# First, does it exist in the given year?
if not outputdatabase[constituency].has_key(year) :
continue
else :
thismargin = getmargin(constituency,year,outputdatabase)
if 100.0 * thismargin < float(cutoff):
seats.append((thismargin,constituency))
seats.sort()
if printout :
for seat in seats :
printmarginal(seat[1],year,outputdatabase)
if args.verbose :
niceprint(seat[1],outputdatabase,yeartoprint=year)
print
if printout :
print
print '------------------------------------------------------------'
print 'Finished printout of',len(seats),'marginals below',cutoff+"%",'for',year
print '------------------------------------------------------------'
print
return seats
def marginals_between(party1, party2, year, cutoff, printout = True) :
# This is a simple analysis which prints out the list of marginals after each
# election which party1 holds with respect to party2. I.e. if you would like to
# know which seats were Tory-Labour marginals (held by Tories) going into
# 1997, modulo boundary changes, ask for the marginals after 1992. The analysis
# can be given a cutoff for what you would like to consider a marginal
if printout :
print
print '------------------------------------------------------------'
print 'Retreiving',party1+'-'+party2,'marginals below',cutoff+"%",'for',year
print '------------------------------------------------------------'
print
seats = []
for constituency in outputdatabase :
if constituency == "elections" : continue
# First, does it exist in the given year?
if not outputdatabase[constituency].has_key(year) :
continue
else :
if not party1 == outputdatabase[constituency][year]["winner"]["party"] :
continue
if not party2 == outputdatabase[constituency][year]["second"]["party"] :
continue
thismargin = getmargin(constituency,year,outputdatabase)
if 100.0 * thismargin < float(cutoff):
seats.append((thismargin,constituency))
seats.sort()
if printout :
for seat in seats :
printmarginal(seat[1],year,outputdatabase)
if args.verbose :
niceprint(seat[1],outputdatabase,yeartoprint=year)
print
if printout :
print
print '------------------------------------------------------------'
print 'Finished printout of',len(seats),party1+'-'+party2,'marginals below',cutoff+"%",'for',year
print '------------------------------------------------------------'
print
return seats
