How To Read A Column From Csv File In Python

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Read Column From Csv File Python

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Select column in csv file in Python. I also read that it is easier to import.csv file into ArcMAP. I'm importing the csv file using csv.reader.

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Posting resources • • • Code hosting • • Related subreddits Python related • • • • General • • • If you have any questions/suggestions please message the moderators: Subreddit CSS and other assets can be found on github here. First of all, what exactly do you mean that you can't import modules? Why are you showing us example code that does import modules, if you can't run it? That makes no sense.

Secondly, are you expecting to refer to these specific columns by name or by number? Do your csv file begin with a header line that names the columns? If it doesn't, then using DictReader is not going to work very well, unless you manually give it a list of field names.

Here's an example for Python 3.x that reads from one file and prints the third column to an output file: from csv import reader with open('output', 'w') as out, open('input', newlines=') as in: for row in reader(in): print(row[2], file=out) Here's the same example for Python 2.x: from csv import reader with open('output', 'w') as out, open('input', 'rb') as in: for row in reader(in): print >>out, row[2] If your input file does contain a header line, then you can use DictReader instead of reader, and you can write row['colname'] instead of row[colnumber]. Download Games Made With Rpg Maker Xp. For exactly the same problem, I don't use the csv module at all.

I simply do the following: f=open('filename.csv','r') g=f.readlines().split(',') f.close() f.readlines() stores g in memory as a Python list of strings and after splitting the strings it becomes a list of lists, such that g[i][j] is the i-th element of the j-th column. If each column has a title, it is found in g[0][j] for each column j. All the g[i][j] elements are strings. If you need numbers you need to typecast them; for example: g[i][j]=float(g[i][j]) • • • •.