如何将Python词典保存到没有索引的csv文件中？

Question

I stored 3 DataFrame in a dictionary called dict , and I would like to save all the dataframes in a csv file like this,

      dict 
      Key  Type        Size    Value
      001  DataFrame   (3,4)   Columns names: date, count, number, expiration
      002  DateFrame   (3,4)   Columns names: date, count, number, expiration               
      003  DateFrame   (3,4)   Columns names: date, count, number, expiration

      Index      date     count  number    expiration
       0      1991-10-01    3     001      1992-10-01
       1      1991-10-02    5     002      1992-10-02
       2      1991-10-03    7     003      1992-10-03

I tried,

with open('data.csv','w') as f:
     w = csv.writer(f, delimiter = '\t')
     w.writerows(dict.items())

But it turns out like this, one row with all the values and also Index

Answer 1

You can youse to_csv function of class DataFrame :

df.to_csv('/path/to/file.csv',sep='\t')

(assuming your DataFrame is named df )

---

UPDATE: if you have multiple DataFrames of the same type then you can merge them in one DataFrame (instead of keeping them in a dictionary separately) and use to_csv function to store it.