Can anyone help me to understand the meanings of numpy dtypes?

Question

Can somebody tell me the meanings of int64, float64, <U6 & <U21?

1) x = np.array([1,2,3,4,5]
print(x.dtype) = int64

2) y = np.array([1.1,2.2,3.3,4.4,5.5]
print(y.dtype) = float64

3) z = np.array(['xyz','abc']
print(z.dtype) = <U6

4) x1 = np.array([1,2,3,'jklm']
print(x1.dtype) = <U21

Answer 1

Sultan Shaikh ,

you can use the numpy tutorial to get a better insight of these data types. scroll down to get some samples and see the descriptions.

https://numpy.org/doc/stable/reference/arrays.dtypes.html

Answer 2

The operating system allocates memory and chooses what will be stored in the allocated memory based on the data type of the variable.