TkHydVar#

module wntr.epanet.msx.enums

class TkHydVar[source]#

Bases: IntEnum

Enumeration for hydraulic variable used in EPANET-MSX.

Warning

These enum values start with 0.

Enum Members

The following enum names are defined, and, if using the get() method, then they are case insensitive and can be optionally prefixed with “MSX_”.

`DIAMETER`	pipe diameter
`FLOW`	pipe flow rate
`VELOCITY`	segment velocity
`REYNOLDS`	Reynolds number
`SHEAR`	shear velocity
`FRICTION`	friction factor
`AREAVOL`	area / volume ratio
`ROUGHNESS`	roughness number
`LENGTH`	pipe or segment length

__init__(*args, **kwds)#

__new__(value)#

as_integer_ratio()#

Return integer ratio.

Return a pair of integers, whose ratio is exactly equal to the original int and with a positive denominator.

>>> (10).as_integer_ratio()
(10, 1)
>>> (-10).as_integer_ratio()
(-10, 1)
>>> (0).as_integer_ratio()
(0, 1)

bit_count()#

Number of ones in the binary representation of the absolute value of self.

Also known as the population count.

>>> bin(13)
'0b1101'
>>> (13).bit_count()
3

bit_length()#

Number of bits necessary to represent self in binary.

>>> bin(37)
'0b100101'
>>> (37).bit_length()
6

conjugate()#: Returns self, the complex conjugate of any int.

from_bytes(byteorder='big', *, signed=False)#

Return the integer represented by the given array of bytes.

bytes: Holds the array of bytes to convert. The argument must either support the buffer protocol or be an iterable object producing bytes. Bytes and bytearray are examples of built-in objects that support the buffer protocol.
byteorder: The byte order used to represent the integer. If byteorder is ‘big’, the most significant byte is at the beginning of the byte array. If byteorder is ‘little’, the most significant byte is at the end of the byte array. To request the native byte order of the host system, use `sys.byteorder’ as the byte order value. Default is to use ‘big’.
signed: Indicates whether two’s complement is used to represent the integer.

classmethod get(value, *, prefix='MSX_', abbrev=False, allow_none=True)#

Get the proper enum based on the name or value of the argument.

See add_get() for details on how this function works.

Parameters:

value (Union[str, int, Enum]) – the value to be checked, if it is an Enum, then the name will be used
prefix (str, optional) – a prefix to strip from the beginning of value, default blank or set by decorator
abbrev (bool, optional) – whether to try a single-letter version of value, default False or set by decorator
allow_none (bool, optional) – passing None will return None, otherwise will raise TypeError, default True or set by decorator

Returns:

the enum member that corresponds to the name or value passed in

Return type:

Enum

Raises:

TypeError – if value is an invalid type
ValueError – if value is invalid

to_bytes(length=1, byteorder='big', *, signed=False)#

Return an array of bytes representing an integer.

length: Length of bytes object to use. An OverflowError is raised if the integer is not representable with the given number of bytes. Default is length 1.
byteorder: The byte order used to represent the integer. If byteorder is ‘big’, the most significant byte is at the beginning of the byte array. If byteorder is ‘little’, the most significant byte is at the end of the byte array. To request the native byte order of the host system, use `sys.byteorder’ as the byte order value. Default is to use ‘big’.
signed: Determines whether two’s complement is used to represent the integer. If signed is False and a negative integer is given, an OverflowError is raised.

AREAVOL = 7#: area / volume ratio

DIAMETER = 1#: pipe diameter

FLOW = 2#: pipe flow rate

FRICTION = 6#: friction factor

LENGTH = 9#: pipe or segment length

MAX_HYD_VARS = 10#

REYNOLDS = 4#: Reynolds number

ROUGHNESS = 8#: roughness number

SHEAR = 5#: shear velocity

VELOCITY = 3#: segment velocity

denominator#: the denominator of a rational number in lowest terms

imag#: the imaginary part of a complex number

numerator#: the numerator of a rational number in lowest terms

real#: the real part of a complex number

TkHydVar#

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