TypeError: list indices must be integers or slices, not str

[TheDovah7]

So I am new to python and I can't seem to find the error with this code, when I try to run I get the message "TypeError: list indices must be integers or slices, not str". My code is:

import pandas as pd
import quandl


df = quandl.get("WIKI/GOOGL", authtoken="X5A1-ewy2UCfkFVfGKuW")
df = [["Adj. Open","Adj. High","Adj. Low","Adj. Close","Adj. Volume",]]
df["HL_PCT"] = (df["Adj. High"] - df["Adj. Close"]) / df["Adj. Close"] * 100.0
df["PCT_change"] = (df["Adj. Close"] - df["Adj. Open"]) / df["Adj. Open"] * 100.0

df = df [["Adj. Close","HL_PCT","PCT_change","Adj. Volume"]]

print(df.head())

Any help would be appiciated

[TheDovah7]

So I am having this problem with my code. I can't figure out why it is working. I am very new to python and would appreciate some help.
The code is:

import pandas as pd
import quandl


df = quandl.get("WIKI/GOOGL", authtoken="X5A1-ewy2UCfkFVfGKuW")
df = [["Adj. Open","Adj. High","Adj. Low","Adj. Close","Adj. Volume",]]
df["HL_PCT"] = (df["Adj. High"] - df["Adj. Close"]) / df["Adj. Close"] * 100.0
df["PCT_change"] = (df["Adj. Close"] - df["Adj. Open"]) / df["Adj. Open"] * 100.0

df = df [["Adj. Close","HL_PCT","PCT_change","Adj. Volume"]]

print(df.head())

And the error I am getting is:

Error:
 RESTART: C:\Users\elias\Desktop\PythonStuff\PythonProjects\MachineLearning.py 
Traceback (most recent call last):
  File "C:\Users\elias\Desktop\PythonStuff\PythonProjects\MachineLearning.py", line 7, in <module>
    df["HL_PCT"] = (df["Adj. High"] - df["Adj. Close"]) / df["Adj. Close"] * 100.0
TypeError: list indices must be integers or slices, not str

Thx :)

[tapumanas]

Hi,
I have checked it with some GOOGL WIKI DATA SET from quandl.Run the following code...

import pandas as pd
df = pd.read_csv("C:\\Users\\Manas\\Desktop\\Misc\\WIKI-PRICES.csv") #.....(of course you have to change the path of your data set)
print(df.head())
df = df[['adj_open','adj_high','adj_low','adj_close','adj_volume']] #.....(Replace with your own features...Adj. Open etc)
df['HL_PCT'] = (df['adj_high'] - df['adj_low'])/df['adj_close']*100
df['PCT_change'] = (df['adj_close'] - df['adj_open']) / df['adj_open'] * 100.0
df = df[['adj_close', 'HL_PCT', 'PCT_change', 'adj_volume']]
print(df.head())

[Gribouillis]

I can't figure out why it is working.

At line 6 you redefine df to be a list. After that, df["some string"] must fail.

[TheDovah7]

Thx for the help. I noticed that I missed a df in one of the lines XD Thx for helping me find it tho, would have never found it myself.