适用于所有的序列类型
names = ('Faye','Leanna','Daylen')
print names[2]
names = ('Faye','Leanna','Daylen')
print names[:]
names = ('Faye','Leanna','Daylen')
print names[::]
s = 'abcdefgh'
print s[::-1]
s = 'abcde'
for i in [None] + range(-1,-len(s),-1):
print s[:i],
abcde abcd abc ab a
for i in range(-1,-len(s),-1):
print s[:i],
abcd abc ab a
a = range(3)
b = range(5)
print zip(a,b)
[(0, 0), (1, 1), (2, 2)]
a = 'Hello World!'
print a
Hello World!
a = 'Hello World!'
print a[1]
e
a = 'Hello World!'
print a[:5] + 'python!'
Hellopython!
a = 'Hello World!'
print a[:3] + a[4:]
Helo World!
a = 'Hello World!'
del a
print 'Spanish' + 'Inquisition'
print 'Spanish' + ' ' + 'Inquisition'
SpanishInquisition
Spanish Inquisition
s = ' '.join(('Spanish','Inquisition','Made Easy'))
print s
Spanish Inquisition Made Easy
print 'Hello' + u' ' + 'World' + u'!'
Hello World!
print "%x" % 108 ,"%X" % 108 , "%#X" % 108 ,"%#x" % 108
6c 6C 0X6C 0x6c
print '%f' % 1234.567890
print '%.2f' % 1234.567890
print '%E' % 1234.567890
print '%e' % 1234.567890
print '%g' % 1234.567890
print '%G' % 1234.567890
print "%+d" % 4
print "%+d" % -4
print "we are at %d%%" % 100
print 'Your host is: %s' % 'earth'
+4
-4
we are at 100%
Your host is: earth
str1 = 'abc'
str2 = 'lmn'
str3 = 'xyz'
print cmp(str1, str2),cmp(str3,str1),cmp(str2,'lmn')
-1 1 0
enumerate()
s = 'foobar'
for i,t in enumerate(s):
print i,t
0 f
1 o
2 o
3 b
4 a
5 r
zip()
s,t = 'foa','obr'
print zip(s,t)
[('f', 'o'), ('o', 'b'), ('a', 'r')]