How to append a row to another dataframe

Question

I have dataframes df1 and df2 both with columns ["Ticker", "Adj.Factor", "Date"]. I want to add to df2 the complete row from df1 if the value of "Adj.Factor" in that row in df1 equals to 0.

I have the following code.

for x in range(tot_len):
    if df1.iloc[x]['Adj.Factor'] == 0:
        df2.append(df1.iloc[x])  --> not working.

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I have tried printing the values and it shows the correct output. But the values are not appended to df2.

Answer 1

It seems you missed an assignment. Here is a simpler solution

df2 = df2.append(df1[df1['Adj.Factor'] == 0])

Answer 2

Try:

df2 = df2.append(df1.iloc[x])

DataFrame.append(self, other, ignore_index=False, verify_integrity=False, sort=False) → 'DataFrame

Append rows of other to the end of caller, returning a new object.

REF