I checked the topic: Writing multiple Python dictionaries to csv file but I think it does not answer my question yet.
I have several dictionaries like:
{day:1, temperature: 30}
{day:2, temperature: 40}
and so on
The dictionaries are not ready at once but are downloaded through a scheduler.
I want to write to a file as:
day temperature
1 30
2 40
and continue to append to the file when new dictionaries come in.
How could I do that with Python 3?
Thank you very much,
Using the csv
module and an iterable of dictionaries L
:
import csv
L = [{'day': 1, 'temperature': 30},
{'day': 2, 'temperature': 40}]
with open(r'c:\temp\out.csv', 'w', newline='') as f:
wr = csv.writer(f)
wr.writerow(['day', 'temperature'])
for item in L:
wr.writerow([item['day'], item['temperature']])
Result:
day,temperature
1,30
2,40
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