Reading and Writing CSV

Using pandas

Write a CSV file from a dict or a DataFrame.

import pandas as pd

d = {'a': (1, 101), 'b': (2, 202), 'c': (3, 303)}
pd.DataFrame.from_dict(d, orient="index")
df.to_csv("data.csv")

Read a CSV file as a DataFrame and convert it to a dict:

df = pd.read_csv("data.csv")
d = df.to_dict()

Writing a TSV file

Python

import csv

with open('/tmp/output.tsv', 'wt') as out_file:
    tsv_writer = csv.writer(out_file, delimiter='\t')
    tsv_writer.writerow(['name', 'field'])
    tsv_writer.writerow(['Dijkstra', 'Computer Science'])
    tsv_writer.writerow(['Shelah', 'Math'])
    tsv_writer.writerow(['Aumann', 'Economic Sciences'])

Output file

$ cat /tmp/output.tsv

name    field
Dijkstra    Computer Science
Shelah    Math
Aumann    Economic Sciences