关于python的for循环步长问题

Question

有如下代码：

for i in range(1,11,2):
    print(i)

这里的范围是1到10，运行后输出为1，3，5，7，9。假如我想实现输出为1，3，5，7，9，10的效果，应该怎么做呢？

Answer 1

for i in range(1, 11, 2):
    print(i)
else:
    print(i + 1)

Answer 2

for i in range(1,10,2):
    print(i)

print(i+1)

Answer 3

import threading
import time

class Worker(threading.Thread):
    def __init__(self, stage):
        threading.Thread.__init__(self)
        self.stage = stage
    def run(self):
        for i in xrange( self.stage, 158, 10 ):
            print "%s  : %d" %(  self.getName, i )

for i in xrange( 1, 11 ):
    worker = Worker( i )
    worker.start()

time.sleep( 1 )

如下是可能的输出结果，因为是多线程，顺序不确定，如下做了排序，以验证处理了1~157：

<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 1
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 2
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 3
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 4
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 5
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 6
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 7
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 8
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 9
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 10
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 11
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 12
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 13
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 14
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 15
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 16
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 17
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 18
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 19
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 20
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 21
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 22
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 23
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 24
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 25
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 26
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 27
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 28
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 29
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 30
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 31
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 32
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 33
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 34
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 35
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 36
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 37
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 38
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 39
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 40
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 41
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 42
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 43
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 44
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 45
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 46
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 47
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 48
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 49
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 50
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 51
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 52
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 53
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 54
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 55
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 56
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 57
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 58
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 59
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 60
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 61
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 62
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 63
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 64
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 65
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 66
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 67
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 68
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 69
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 70
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 71
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 72
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 73
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 74
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 75
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 76
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 77
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 78
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 79
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 80
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 81
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 82
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 83
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 84
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 85
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 86
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 87
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 88
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 89
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 90
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 91
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 92
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 93
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 94
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 95
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 96
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 97
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 98
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 99
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 100
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 101
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 102
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 103
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 104
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 105
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 106
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 107
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 108
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 109
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 110
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 111
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 112
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 113
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 114
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 115
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 116
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 117
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 118
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 119
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 120
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 121
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 122
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 123
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 124
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 125
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 126
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 127
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 128
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 129
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 130
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 131
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 132
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 133
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 134
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 135
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 136
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 137
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 138
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 139
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 140
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 141
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 142
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 143
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 144
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 145
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 146
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 147
<bound method Worker.getName of <Worker(Thread-8, started 4453552128)>>  : 148
<bound method Worker.getName of <Worker(Thread-9, started 4449345536)>>  : 149
<bound method Worker.getName of <Worker(Thread-10, started 4457758720)>>  : 150
<bound method Worker.getName of <Worker(Thread-1, started 4445138944)>>  : 151
<bound method Worker.getName of <Worker(Thread-2, started 4449345536)>>  : 152
<bound method Worker.getName of <Worker(Thread-3, started 4453552128)>>  : 153
<bound method Worker.getName of <Worker(Thread-4, started 4449345536)>>  : 154
<bound method Worker.getName of <Worker(Thread-5, started 4457758720)>>  : 155
<bound method Worker.getName of <Worker(Thread-6, started 4461965312)>>  : 156
<bound method Worker.getName of <Worker(Thread-7, started 4445138944)>>  : 157

Answer 4

a=1
while a<11:
    print(a)
    a+=2
print(a-1)

Answer 5

可以这样操作:

for i in range(1,12,2):
    if i == 11:
        print(i-1)
    else:
        print(i)

Answer 6

你要的是不是这个效果:

for i in range(1, 11, 2):
    print(i)

for i in range(2, 11, 2):
    print(i)