How To Write Dictionary With Multiple Values To A Csv?

I have a dictionary that looks like this { 1: ['apple', 'orange'], 2: ['fennel', 'basil', 'bay leaves'], 3: ['almonds', 'walnuts']} I'm trying to export it into CSV and have t

Solution 1:

Loop through the dictionary keys/values, then loop through the values:

import csv

D = { 1: ['apple', 'orange'],
      2: ['fennel', 'basil', 'bay leaves'],
      3: ['almonds', 'walnuts']}

# with open('out.csv','w',newline='') as f:  # Python 3
with open('out.csv','wb') as f:              # Python 2
    w = csv.writer(f)
    w.writerow(['list_id','list_items'])
    for key,items in D.items():
        for item in items:
            w.writerow([key,item])