July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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98
｜
第
5
章
continue
elif
row[2] == '':
first_name = row[0]
continue
if
first_name:
➊
row[0] = u'{} {}'.format(first_name, row[0])
first_name = False
➋
final_data.append(dict(zip(headers, row)))
if
row[0] == 'Zimbabwe':
break
pprint.pprint(final_data)
➊
如果这一行有
first_name
，那么在该行内将国名合并。
➋
将
first_name
重新设置为
False
，这样下一次迭代可以正常运行。
现在数据导入工作已全部完成。如果你希望数据结构与从
Excel
导入的数据完全相同，需
要对数据做进一步处理，但我们已经可以将
PDF
中的数据保存成行数据。
pdftables
已经不再受到积极的支持，它的开发者现在提供替代的新产品，
但却是收费的（
https://pdftables.com/
）。依赖不受支持的代码是很危险的，我
们也不能认为
pdftables
总是可用
3
。但是，开源社区的一部分内容就是回馈，
所以我们鼓励你找到好项目，为它做贡献，帮它宣传，希望像
pdftables
这
样的项目能够保持开源，能够继续成长并发展。
下面，我们来看一下解析
PDF
数据的其他方法，其中包括手动清洗数据。
5.4.2
练习
：
手动清洗数据
我们来聊一聊一个大家闭口不谈却确实存在的事实。阅读本章的过程中，你可能一直想知 ...
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