df['Inicio'] = pd.to_datetime(df['Inicio']) Traceback (most recent call last): Cell In[24], line 1 df['Inicio'] = pd.to_datetime(df['Inicio']) NameError: name 'df' is not defined

The error message indicates that the variable `df` is not defined in the current scope. This means that you are trying to assign a value to `df['Inicio']` before `df` has been created.

To fix this issue, you need to create a DataFrame object `df` before trying to assign a value to one of its columns. Here's an example:

```python
import pandas as pd

# Create a DataFrame object
df = pd.DataFrame({
    'Inicio': ['2022-01-01', '2022-01-02', '2022-01-03']
})

# Convert the 'Inicio' column to datetime
df['Inicio'] = pd.to_datetime(df['Inicio'])
```

Alternatively, if you are working with an existing DataFrame and you are trying to convert a column to datetime, make sure that the column exists in the DataFrame before trying to convert it.

```python
import pandas as pd

# Create a DataFrame object
df = pd.DataFrame({
    'Inicio': ['2022-01-01', '2022-01-02', '2022-01-03']
})

# Check if the column exists
if 'Inicio' in df.columns:
    # Convert the 'Inicio' column to datetime
    df['Inicio'] = pd.to_datetime(df['Inicio'])
else:
    print("The column 'Inicio' does not exist in the DataFrame.")
```

If you are still getting the error, it might be because the column 'Inicio' does not exist in the DataFrame, or the column contains values that cannot be converted to datetime. In this case, you need to check the values in the column and make sure they are in the correct format.