In the following example, we shall use not equal operator in IF statement condition.Ī%2 != 0 returns True for a=11. Therefore, this can be used in conditions of decision making statements. We already know that not equal operator returns a boolean value. Example 2: Not Equal Operator with IF Statement Must contain 'x' which is the independent variable.Į.g.In this example, we shall take two integers, and check if they are not equal using !=.Ī and b are not equal and therefore a != b returned True.Ī and c are equal and therefore a != b returned False. The OpenPNM object where the result will be applied.Įqn : sympy symbolic expression for the source termsĪrg_map : Dict mapping the symbols in the expression to OpenPNM data
Symbol for does not equal to python how to#
Raise ValueError("octoutput does not know how to export type " + str(type(x)))ĭef general_symbolic(target, eqn=None, arg_map=None):Ī general function to interpret a sympy equation and evaluate the linear # We pass IEEE doubles using the exact hex representationĮlif isinstance(x, str) or (sys.version_info = (3, 0): Pretty_unicode = sp.pretty(x, use_unicode=True) Pretty_ascii = sp.pretty(x, use_unicode=False)
_d = [float(r) if (isinstance(r, sp.Basic) and r.is_Integer)Įlse float('nan') if isinstance(r, sp.Basic) If isinstance(x, (sp.Matrix, sp.ImmutableMatrix)): # FIXME: is it weird to pretend None is a SymPy object? With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_expr_dummy_syms.dat", "r") as f: A_expr_dummy_syms = array(sympy.sympify(f.read())).squeeze()Įlif x is None or isinstance(x, (sp.Basic, sp.MatrixBase)): With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_dot_expr_dummy.dat", "r") as f: A_dot_expr_dummy = sympy.sympify(f.read()) With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_expr_dummy.dat", "r") as f: A_expr_dummy = sympy.sympify(f.read()) With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_dot_expr_dummy_syms.dat", "w") as f: f.write(sympy.srepr(sympy.Matrix(A_dot_expr_dummy_syms))) With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_expr_dummy_syms.dat", "w") as f: f.write(sympy.srepr(sympy.Matrix(A_expr_dummy_syms))) With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_dot_expr_dummy.dat", "w") as f: f.write(sympy.srepr(A_dot_expr_dummy)) With open(current_source_file_path+"/data/sympy/quadrotorcamera3d_A_expr_dummy.dat", "w") as f: f.write(sympy.srepr(A_expr_dummy)) Syms = Ī_expr_dummy, A_expr_dummy_syms = sympyutils.dummify( A_expr, syms )Ī_dot_expr_dummy, A_dot_expr_dummy_syms = sympyutils.dummify( A_dot_expr, syms )Ĭurrent_source_file_path = pathutils.get_current_source_file_path() , omega_x_terms_expr, omega_x_terms_expr ] ] )Ī_dot_expr = igsimp(A_expr.diff(t_expr)) Variables = unique(re.findall("_?\w*",formula))Ĭommand = ",".join(variables)+" = sympy.symbols(\"" + ",".join(variables) + "\")"ĪdditiveBlocks = sympy.sympify(additiveBlocks)ĪdditiveBlocks = īackward = backward.replace("_fragmentNb%d_"%i,fragments)įorward = forward.replace("_fragmentNb%d_"%i,fragments) #formula = re.sub("(\w)"+re.escape(fragments),r"\1_fragmentNb%d_"%i,formula)įormula = formula.replace(fragments,"_fragmentNb%d_"%i) 'target_expr' should be the trusted sympy expression to match against.Įlif sympy.srepr(test_expr) = sympy.srepr(target_expr): 'test_expr' should be the untrusted sympy expression to check. Returns True if the sympy expressions have the same internal structure, These two forms are treated equivalently as 'exact' The 'srepr' method outputs sympy's internal representation in a canonical formĪnd thus, while performing no simplification, it allows ordering to be ignored Matches and will not recognise 'x + 1' as equal to '1 + x'. Testing is first done using '=' which checks that the order of symbols So is useful for checking if the submitted answer requires simplifying. This equality checking does not expand brackets or perform much simplification,
"""Test if the entered expression exactly matches the known expression.
0 kommentar(er)
