My dataframe is:

| 0 | 1 | 2 | 3 |
| --- | --- | --- | --- |
| a | 1091 | 347 | 2164 |
| b | 208 | 284 | 27647 |
| c | 0 | 8126 | 22 |

After transposing

| 0 | a | b | c |
| --- | --- | --- | --- |
| 1 | 1.091 | 208 | 0 |
| 2 | 347 | 284 | 8126 |
| 3 | 2161 | 27647 | 22 |

```
df=df.set_index(0)
print(df)
df = df.T
print(df)
df = df.sort_values(by=df.index, ascending=True)
print(df)

```

But I am getting an error like:

```
KeyError: Int64Index([1, 2, 3, 4], dtype='int64')

```

I am trying to plot index values to a column but it should be in ascending order because index 3 refers new value but index 1 is an old value in the time range.

```
fig = px.line(df, x=df.index, y=df['a'])
fig.show()

```