How to plot graph against index in python [duplicate]

Question

The data looks like this:

        1       2       3       4
foo             
t0      95      95.5    75.5    85
t1      95.75   95.5    75.5    85
t2      96.5    95.5    75.5    85
t3      96.5    95.5    75.5    85
t4      96.5    95.5    75.5    85
...     ...     ...    ...  ...
t9996   95.5    95      75.5    85.5
t9997   95.5    95      75.5    85.5
t9998   95.5    95      75.5    85.5
t9999   95.5    95      75.5    85.5
t10000  95.5    95      75.5    85.5

I want to plot the 4 time series against the index. Using code:

df.plot(x = 'foo', y = '1')

I received this error:

KeyError: 'foo'

How should I do this?

Answer 1

Use this. If x argument isn't provided, DataFrame.plot() takes df.index as default.

df.plot(y='1')