Data type routines¶
can_cast (from_, to[, casting]) |
Returns True if cast between data types can occur according to the casting rule. |
promote_types (type1, type2) |
Returns the data type with the smallest size and smallest scalar kind to which both type1 and type2 may be safely cast. |
min_scalar_type (a) |
For scalar a , returns the data type with the smallest size and smallest scalar kind which can hold its value. |
result_type (*arrays_and_dtypes) |
Returns the type that results from applying the NumPy type promotion rules to the arguments. |
common_type (*arrays) |
Return a scalar type which is common to the input arrays. |
obj2sctype (rep[, default]) |
Return the scalar dtype or NumPy equivalent of Python type of an object. |
Creating data types¶
dtype (obj[, align, copy]) |
Create a data type object. |
format_parser (formats, names, titles[, …]) |
Class to convert formats, names, titles description to a dtype. |
Data type information¶
finfo (dtype) |
Machine limits for floating point types. |
iinfo (type) |
Machine limits for integer types. |
MachAr ([float_conv, int_conv, …]) |
Diagnosing machine parameters. |
Data type testing¶
issctype (rep) |
Determines whether the given object represents a scalar data-type. |
issubdtype (arg1, arg2) |
Returns True if first argument is a typecode lower/equal in type hierarchy. |
issubsctype (arg1, arg2) |
Determine if the first argument is a subclass of the second argument. |
issubclass_ (arg1, arg2) |
Determine if a class is a subclass of a second class. |
find_common_type (array_types, scalar_types) |
Determine common type following standard coercion rules. |
Miscellaneous¶
typename (char) |
Return a description for the given data type code. |
sctype2char (sctype) |
Return the string representation of a scalar dtype. |
mintypecode (typechars[, typeset, default]) |
Return the character for the minimum-size type to which given types can be safely cast. |