从Excel和CSV文件中读取特定的行/列

Question

I am a beginner at Python and I'm looking to take 3 specific columns starting at a certain row from a .csv spreadsheet and then import each into python.

For example

I would need to take 1000 rows worth of data from column F starting at row 12.

I've looked at options using cvs and pandas but I can't figure out how to have them start importing at a certain row/column.

Any help would be greatly appreciated.

Answer 1

If the spreadsheet is not huge, the easiest approach is to load the entire CSV file into Python using the csv module and then extract the required rows and columns. For example:

import csv
rows = list(csv.reader(file('Book1.csv', 'rb')))
data = [column[5] for column in rows[11:11+1000]]

will do the trick. Remember that Python starts numbering from 0, so column[5] is column F from your spreadsheet and rows[11] is row 12.

Answer 2

CSV files being text files, there is no way to read a certain line. You will have to read line per line, and count... Have a look at the csv module in Python, which will explain how to (easily) read lines. Particularly this sectio n.