To Iterate dataframe to check the unit and convert the units .TypeError: tuple indices must be integers or slices, not str

Question

我正在尝试检查我的数据集中的单位但出现此错误，有人可以帮助我解决这个问题吗

df=pd.read_csv("/content/unit_checkv1.csv")

UNITS ={"G/HA":0.001,"ML/100KG":0.001}

for row in df.iterrows():
  unit_factor, unit_target = UNITS[row["DOSAGE_UNIT"]]
  if unit_factor:
    row["DOSAGE"] = (
    row["DOSAGE"] * unit_factor
    if row["DOSAGE"] is not None
    else None
  )
row["DOSAGE_UNIT"] = unit_target

Answer 1

您可以使用 Series.map 代替您的解决方案：

df['NEW'] = df["DOSAGE_UNIT"].map(UNITS) * df['DOSAGE']