def __init__(self, ex):
r"""
Initialize ``self``.
TESTS::
sage: f = function('f')(x)
sage: df = f.diff(x)
sage: df
D[0](f)(x)
sage: from sage.manifolds.utilities import ExpressionNice
sage: df_nice = ExpressionNice(df)
sage: df_nice
d(f)/dx
"""
from sage.symbolic.ring import SR
self._parent = SR
Expression.__init__(self, SR, x=ex)
def __init__(self, ex):
r"""
Initialize ``self``.
TESTS::
sage: f = function('f')(x)
sage: df = f.diff(x)
sage: df
diff(f(x), x)
sage: from sage.manifolds.utilities import ExpressionNice
sage: df_nice = ExpressionNice(df)
sage: df_nice
d(f)/dx
"""
from sage.symbolic.ring import SR
self._parent = SR
Expression.__init__(self, SR, x=ex)
def __init__(self, ex):
r"""
Construct an instance of ExpressionNice using expression.
TESTS::
sage: f = function('f', x)
sage: df = f.diff(x)
sage: df
D[0](f)(x)
sage: from sage.geometry.manifolds.utilities import ExpressionNice
sage: df_nice = ExpressionNice(df)
sage: df_nice
d(f)/dx
"""
from sage.symbolic.ring import SR
self._parent = SR
Expression.__init__(self, SR, x=ex)
def __init__(self, ex):
r"""
Construct an instance of ExpressionNice using expression.
TESTS::
sage: f = function('f', x)
sage: df = f.diff(x)
sage: df
D[0](f)(x)
sage: from sage.geometry.manifolds.utilities import ExpressionNice
sage: df_nice = ExpressionNice(df)
sage: df_nice
d(f)/dx
"""
from sage.symbolic.ring import SR
self._parent = SR
Expression.__init__(self, SR, x=ex)