float() argument must be a string or a number, not 'Timestamp'

This error occurs when you try to pass a pandas Timestamp object to the float() function. The float() function can only convert strings or numbers to floating-point numbers.

To fix this error, you need to convert the Timestamp object to a float or a string before passing it to the float() function. You can use the timestamp's value attribute to get the float representation of the timestamp.

Here's an example:

import pandas as pd

# create a timestamp object
ts = pd.Timestamp('2021-01-01 00:00:00')

# convert the timestamp to a float
ts_float = ts.value / 10**9

# pass the float to the float() function
float_value = float(ts_float)

print(float_value)

Output:

1609459200.0

In this example, we first created a Timestamp object 'ts' representing January 1st, 2021 at midnight. We then converted the Timestamp object to a float by dividing its value attribute by 10^9 (the number of nanoseconds in a second). Finally, we passed the float value to the float() function and printed the result.