本文介绍了AttributeError:"DataFrame"对象没有属性"set_value"的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用flask并在set_values处出错.我正在读取html的输入并将其传递给代码
I'm using flask and getting error at set_values. I'm reading the input from html and passing it to the code
@app.route('/home', methods=['POST'])
def first():
source = request.files['first']
destination = request.files['second']
df = pd.read_csv(source)
df1 = pd.read_csv(destination)
val1 = int(request.form['val1'])
val2 = int(request.form['val2'])
val3 = int(request.form['val3'])
target = request.form['str']
df2 = df[df.columns[val2]]
count = 0
for j in df[df.columns[val1]]:
x = df1.loc[df1[df1.columns[val3]] == j].index.values
for i in x:
df1.set_value(i, target, df2[count])
count = count + 1
df1.to_csv('result.csv', index=False)
推荐答案
检查您的熊猫版本.
df.set_value() 从pandas版本0.21.0起已被弃用
df.set_value() is deprecated since pandas version 0.21.0
请改为使用 df.at
import pandas as pd
df = pd.DataFrame({"A":[1, 5, 3, 4, 2],
"B":[3, 2, 4, 3, 4],
"C":[2, 2, 7, 3, 4],
"D":[4, 3, 6, 12, 7]})
df.at[2,'B']=100
A B C D
0 1 3 2 4
1 5 2 2 3
2 3 100 7 6
3 4 3 3 12
4 2 4 4 7
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