Python
>Datastrukturer
Python datastrukturer
List
Programmet setter opp en enkel liste og skriver ut innholdet.
"""
Simple module demonstrating lists and loops
"""
S=['ole','adam','marit','silvio','petronella']
# dump it
print S
# simplest
for name in S:
print name
# for loop
for ix in range(0,len(S)):
print S[ix]
#while loop
ix=0
while ix < len(S):
print S[ix]
ix+=1
Lister og sortering.
"""
Simple module demonstrating lists and sorting
"""
S=['ole','adam','marit','silvio','petronella']
for name in S:
print name
print '------ reversed -------'
S.reverse()
for name in S:
print name
print '--- sorted -----'
S.sort()
for name in S:
print name
print '---- sorted and then reversed ---'
S.reverse()
for name in S:
print name
Lister av lister, og sortering.
"""
Simple module demonstrating lists and sorting
name and year of birth
"""
import datetime
S=[['ole',1998],['adam',2002],['marit',1973],['silvio',2002],['petronella',1956]]
# dump it
for person in S:
print person
# sort sets as they are
S.sort()
for person in S:
print person
# sort on age
def compareYearOfBirth(a,b):
return a[1] - b[1]
S.sort(compareYearOfBirth)
y=datetime.datetime.today().year
for person in S:
print person[0]+' is '+str(y-person[1])+' years old'
Dictionary
"""
Working with dicuionaries
"""
import datetime
D={}
D['ole']=['mysen',1998]
D['jens']=['halden',2005]
D['peder']=['moss',2001]
# dump it
print D
# loop it
keylist=D.keys()
for k in keylist:
print k+' is from '+D[k][0]+' and is born in '+str(D[k][1])
# iterate
for k, v in D.iteritems():
print k+' is from '+v[0]+' and is born in '+str(v[1])
# sort on name
keylist=D.keys()
keylist.sort()
for k in keylist:
print k+' is from '+D[k][0]+' and is born in '+str(D[k][1])
# sort on age
items=D.items()
y=datetime.datetime.today().year
def compareYearOfBirth(p1,p2):
return p2[1][1]-p1[1][1]
items.sort(compareYearOfBirth)
for item in items:
print item[0]+' is '+str(y-D[item[0]][1])+' years old, from '+D[item[0]][0]
