如何将字典写入csv文件？

Question

The dictionary looks like the following.

res = {'Qatar': ['68.61994212', '59.03245947', '55.10905996'],
'Burundi': ['0.051012487', '0.048311391', '0.046681908'],
'Japan': ['9.605144835', '9.247590692', '9.542878595', ]}

I want to get rid of ' [ ] in my csv file

I want to get the output csv as,

Qatar 68.61994212 59.03245947 55.10905996

Burundi 0.051012487 0.048311391 0.046681908

Japan 9.605144835 9.247590692 9.542878595

Answer 1

Try the code below. The reason you are getting '[]' is because you might be trying to write the val of the dictionary as-is which is a list. Instead you need to retrieve the values in the list and then write it.

import csv

res = {'Qatar': ['68.61994212', '59.03245947', '55.10905996'],
'Burundi': ['0.051012487', '0.048311391', '0.046681908'],
'Japan': ['9.605144835', '9.247590692', '9.542878595', ]}

with open('./result.csv', 'w') as res_file:
    csv_writer = csv.writer(res_file)
    for k, v in res.items():
        res_val = [x for x in v]
        res_val.insert(0, k)
        csv_writer.writerow(res_val)

OUTPUT :

The contents of the file (result.csv) are as below:

Burundi,0.051012487,0.048311391,0.046681908
Japan,9.605144835,9.247590692,9.542878595
Qatar,68.61994212,59.03245947,55.10905996

Answer 2

Aside from Jay-s answer if you are allowed to use Pandas then you can use panda-s to_csv function to just make the csv in one line.

import pandas as pd

df = pd.DataFrame(res)
df.to_csv('my_result.csv', index=False)

Answer 3

Try this: [(k,) + tuple(res[k]) for k in res]

You will get list of tuples likes this which you can write to a csv file:

[('Burundi', '0.051012487', '0.048311391', '0.046681908'), ('Japan', '9.605144835', '9.247590692', '9.542878595'), ('Qatar', '68.61994212', '59.03245947', '55.10905996')]

Answer 4

Pandas will do it:

import pandas as pd

res = {'Qatar': ['68.61994212', '59.03245947', '55.10905996'],
       'Burundi': ['0.051012487', '0.048311391', '0.046681908'],
       'Japan': ['9.605144835', '9.247590692', '9.542878595', ]}

df = pd.DataFrame.from_dict(res, orient='index')
df.to_csv('res.csv', header=False)

Be sure to use "orient='index'" when creating the dataframe so that you get the correct row indexing in the csv

Qatar,68.61994212,59.03245947,55.10905996
Burundi,0.051012487,0.048311391,0.046681908
Japan,9.605144835,9.247590692,9.542878595