TypeError: object of type 'numpy.int64' has no len()

This error occurs when you try to use the len() function on a variable that is of type numpy.int64. The len() function is used to get the length of an object, but it cannot be used with integer values.

To fix this error, you need to convert the variable to a type that can be used with the len() function. For example, you can convert the variable to a string using the str() function and then get the length of the string using the len() function.

Here is an example:

import numpy as np

a = np.int64(10)

# This line will raise a TypeError
# because you cannot use len() with an integer value
print(len(a))

# Convert the variable to a string using str() function
a_str = str(a)

# Now you can use len() function to get the length of the string
print(len(a_str))

Output:

TypeError: object of type 'numpy.int64' has no len()

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