# Broken Interface for Python < 3.9 and Jax installed If Jax is installed the Correlated Field of nifty tries to make an instance of the nifty.re.correlated field using |= which is a python 3.9 syntax. This brakes the interface for users having an older python version and jax as well. IMHO we should go to the .update syntax instead. If we want to use this syntax, we can consider to update the minimal python version required for using NIFTy8. @gedenhof @wmarg @pfrank ```python fluctuations = WrappedCall(fluctuations, name=prefix + "fluctuations") ptree = fluctuations.domain loglogavgslope = WrappedCall(loglogavgslope, name=prefix + "loglogavgslope") ptree |= loglogavgslope.domain if flexibility is not None: flexibility = WrappedCall(flexibility, name=prefix + "flexibility") ptree |= flexibility.domain # Register the parameters for the spectrum _safe_assert(log_vol is not None) _safe_assert(rel_log_mode_len.ndim == log_vol.ndim == 1) ptree |= {prefix + "spectrum": ShapeWithDtype((2, ) + log_vol.shape)} if asperity is not None: asperity = WrappedCall(asperity, name=prefix + "asperity") ptree |= asperity.domain ``` [Go to File](src/re/correlated_field.py#L133-146)