s = set(['Adam', 'Lisa', 'Paul'])
L = ['Adam', 'Lisa', 'bart', 'Paul']
for a in L:
if a in s:
s.remove(a)
else:
s.add(a)
print s
L = ['Adam', 'Lisa', 'bart', 'Paul']
for a in L:
if a in s:
s.remove(a)
else:
s.add(a)
print s
2016-08-08
s = set([('Adam', 95), ('Lisa', 85), ('Bart', 59)])
for x in s:
print x[0],':',x[1]
for x in s:
print x[0],':',x[1]
2016-08-08
我太会偷懒了。。。。
months = set(['Feb',])
x1 = 'Feb'
x2 = 'Sun'
if x1 in months:
print 'x1: ok'
else:
print 'x1: error'
if x2 in months:
print 'x2: ok'
else:
print 'x2: error'
months = set(['Feb',])
x1 = 'Feb'
x2 = 'Sun'
if x1 in months:
print 'x1: ok'
else:
print 'x1: error'
if x2 in months:
print 'x2: ok'
else:
print 'x2: error'
2016-08-08
s = set(['adam', 'Lisa', 'bart', 'Paul'])
print 'adam' in s
print 'bart' in s
print 'adam' in s
print 'bart' in s
2016-08-08
好吧,刚才忘写冒号了。。。
d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for k in d:
print k,':',d[k]
d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for k in d:
print k,':',d[k]
2016-08-08
d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for m in d:
print m,d[m]
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for m in d:
print m,d[m]
2016-08-08
BlueLemon:
Bart终于及格了!!!
####################
回复:肯定是微机课,一切“从0开始”
Bart终于及格了!!!
####################
回复:肯定是微机课,一切“从0开始”
2016-08-08
http://www.w3school.com.cn/html/html_tables.asp 学习这节课的时候先学习HTML表格。前面是网址,会轻松些
2016-08-08
def average(*args):
if len(args) == 0:
return 0.0
return sum(args)/float(len(args))
print average()
print average(1, 2)
print average(1, 2, 2, 3, 4)
if len(args) == 0:
return 0.0
return sum(args)/float(len(args))
print average()
print average(1, 2)
print average(1, 2, 2, 3, 4)
2016-08-08