numpy.fromstring — NumPy v1.15 Manual (original) (raw)

numpy. fromstring(string, dtype=float, count=-1, sep='')¶

A new 1-D array initialized from text data in a string.

Parameters:	string : str A string containing the data. dtype : data-type, optional The data type of the array; default: float. For binary input data, the data must be in exactly this format. count : int, optional Read this number of dtype elements from the data. If this is negative (the default), the count will be determined from the length of the data. sep : str, optional The string separating numbers in the data; extra whitespace between elements is also ignored. Deprecated since version 1.14: If this argument is not provided, fromstring falls back on the behaviour of frombuffer after encoding unicode string inputs as either utf-8 (python 3), or the default encoding (python 2).
Returns:	arr : ndarray The constructed array.
Raises:	ValueError If the string is not the correct size to satisfy the requesteddtype and count.

Parameters:

string : str A string containing the data. dtype : data-type, optional The data type of the array; default: float. For binary input data, the data must be in exactly this format. count : int, optional Read this number of dtype elements from the data. If this is negative (the default), the count will be determined from the length of the data. sep : str, optional The string separating numbers in the data; extra whitespace between elements is also ignored. Deprecated since version 1.14: If this argument is not provided, fromstring falls back on the behaviour of frombuffer after encoding unicode string inputs as either utf-8 (python 3), or the default encoding (python 2).

Returns:

arr : ndarray The constructed array.

Raises:

ValueError If the string is not the correct size to satisfy the requesteddtype and count.

Examples

np.fromstring('1 2', dtype=int, sep=' ') array([1, 2]) np.fromstring('1, 2', dtype=int, sep=',') array([1, 2])