np. astype()

Hello everyone , I meet you again , I'm your friend, Quan Jun .

1. effect ： It's conversion numpy Data type of array

for instance

arr = np.arange((10))
print(arr, arr.dtype, sep="\n")
===================================
[0 1 2 3 4 5 6 7 8 9]
int32    # You can see , His data type is  int32

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np.astype()

arr = arr.astype("float32")
print(arr, arr.dtype, sep="\n")
===================================
[0. 1. 2. 3. 4. 5. 6. 7. 8. 9.]
float32    # You can see that the data type is converted to    float32

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usage ：arr.astype(“ Specific data types ”)

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