python - Python 2.7 W7 - 如何将 map reduce 函数的结果写入文件

Question

我有一个“打印结果”（很好），就像这样：

'Mixer Audio|Mixer Video'：2，'Tecnico Audio|Operatore Televideo'：4，'|Tecnico Video'：4，'Tecnico Audio|Tecnico Audio'：7，'Mixer Audio|Mixer Audio'：3

我尝试将结果导出到 txt 文件：

 with open('s.txt', 'w') as line:
    for row in results:
        print row
        line.write("%s\n" % str(row))

这是我在 s.txt 中找到的：

Mixer Audio|Mixer Video
Tecnico Audio|Operatore Televideo
|Tecnico Video
Tecnico Audio|Tecnico Audio
Mixer Audio|Mixer Audio

我真的需要专家的帮助。

Answer 1

您results是一本字典，您的代码只是将密钥写入文件。您还应该编写值。

results = {'Mixer Audio|Mixer Video' : 2, 'Tecnico Audio|Operatore Televideo' : 4, ' |Tecnico Video' : 4, 'Tecnico Audio|Tecnico Audio' : 7, 'Mixer Audio|Mixer Audio' : 3}

with open('s.txt', 'w') as line:
    for key, value in results.iteritems():
        line.write("{}: {}\n".format(key, value))

结果：

Mixer Audio|Mixer Audio: 3
 |Tecnico Video: 4
Mixer Audio|Mixer Video: 2
Tecnico Audio|Operatore Televideo: 4
Tecnico Audio|Tecnico Audio: 7

您还可以在一行中获得所有结果，类似于print results：

results = {'Mixer Audio|Mixer Video' : 2, 'Tecnico Audio|Operatore Televideo' : 4, ' |Tecnico Video' : 4, 'Tecnico Audio|Tecnico Audio' : 7, 'Mixer Audio|Mixer Audio' : 3}
with open('s.txt', 'w') as line:
    line.write(str(results))

结果：

{'Mixer Audio|Mixer Audio': 3, '|Tecnico Video': 4, 'Mixer Audio|Mixer Video': 2, 'Tecnico Audio|Operatore Televideo': 4, 'Tecnico Audio|Tecnico Audio': 7}