[英]Keyword search in a large CSV file using Python
I wonder if there is a way to search a list of keywords using Python. 我想知道是否有一种使用Python搜索关键字列表的方法。 I am able to search though my data using PostgreSQL.
我可以使用PostgreSQL搜索数据。 Here is my PostgreSQL code
这是我的PostgreSQL代码
SELECT distinct ON (id) id, year, cost, description
FROM mydata
WHERE description similar to'%((hotel)||(travel)|(taxi)|(food))%';
I don't know if Python is the best way to do it, but the work that I am replicating uses Python and would like to stick with Python. 我不知道Python是否是最好的方法,但是我正在复制的工作使用Python,并且希望坚持使用Python。
I was able to search one keyword but am not sure how to do multiple. 我能够搜索一个关键字,但不确定如何做多个。
import csv
with open('mydata.csv', 'r') as f:
for line in f.readlines():
if 'food' in line:
print(line)
I need help with 我需要帮助
1) searching using multiple keywords 1)使用多个关键字进行搜索
2) way to export the data back to csv 2)将数据导出回csv的方法
> import pandas as pd
multiple keyword search using contains 使用包含的多关键字搜索
> df = pd.read_csv('mydata.csv')
> df[df.description.str.contains('hotel|travel|taxi|food')]
Export to csv 导出到CSV
> df.to_csv('new.csv')
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