在循环 python 的每次迭代中保存 csv 文件

Question

I want to know how can i save each CSV file in iteration on a pandas data frame.

Like i need to save each file as newcsv_1, newcsv_2, newcsv_3.....

I have used it for loop but it is starting saving from 0 ex:

for i in range(0, len(arr)):
    df = pd.Dataframe(arr[i])

    df.to_csv("newcsv_{}".format(i))

newcsv_0, newcsv_1, newcsv_2

but I do not want to save it from 0 want to save it from 1

Answer 1

you can add +1 df.to_csv(f"newcsv_{i+1}")

for i in range(0, len(arr)):
    df = pd.Dataframe(arr[i])

    df.to_csv(f"newcsv_{i+1}")

or you can start loop to 1 and then at the end +1.

for i in range(1, len(arr)+1):
    df = pd.Dataframe(arr[i])

    df.to_csv(f"newcsv_{i}")

Answer 2

for i in range(1, len(arr) + 1): df = pd.Dataframe(arr[i]) df.to_csv("newcsv_{}".format(i))

Answer 3

Just do:

df.to_csv("newcsv_{}.csv".format(i+1))

A better way is to:

df.to_csv(f"newcsv_{i+1}.csv") # f-string format python 3

Answer 4

df.to_csv("newcsv_{}.csv".format(i+1))