有什么方法可以修复错误字符串索引必须是整数？

Question

I tried to make graphs for my csv dataset in Jupyter Notebook, using this line of code:

bank['marital'].value_counts().plot(kind='pie',autopct='%.2f') 
plt.show()

However, the system return, "string indices must be integers".

I have tried to use many different methods like changing the string to a number,... but nothing really worked

Answer 1

I tried to reproduce it and it worked fine. So it's not something wrong with the code itself. I suggest experimenting with:

1. restart Jupyter Notebook
2. play with a tiny synthetic dataset
3. cut the real dataset till it works
4. attach failing dataset contents to the question

Attaching my results:

[input.csv]
name,smth
Maria,12
Anton,2
Maria,3
...

df = pd.read_csv('input.csv')
df['name'].value_counts().plot(kind='pie',autopct='%.2f')