SciPy

scipy.constants.value

scipy.constants.value(key)[source]

Value in physical_constants indexed by key

Parameters
keyPython string or unicode

Key in dictionary physical_constants

Returns
valuefloat

Value in physical_constants corresponding to key

See also

codata

Contains the description of physical_constants, which, as a dictionary literal object, does not itself possess a docstring.

Examples

>>> from scipy import constants
>>> constants.value(u'elementary charge')
    1.6021766208e-19

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