def __init__(self):
if not is_pyethereum16_available():
version = get_pyethereum_version()
if version is None:
raise pkg_resources.DistributionNotFound(
"The `ethereum` package is not available. The "
"`PyEthereum16Backend` requires a 1.6.x version of the "
"ethereum package to be installed.")
elif version not in Spec('>=1.6.0,<1.7.0'):
raise pkg_resources.DistributionNotFound(
"The `PyEthereum16Backend` requires a 1.6.x version of the "
"`ethereum` package. Found {0}".format(version))
self.reset_to_genesis()
def __init__(self):
if not is_pyethereum21_available():
version = get_pyethereum_version()
if version is None:
raise BackendDistributionNotFound(
"The `ethereum` package is not available. The "
"`PyEthereum21Backend` requires a 2.0.0+ version of the "
"ethereum package to be installed.")
elif version not in Spec('>=2.0.0,<2.2.0'):
raise BackendDistributionNotFound(
"The `PyEthereum21Backend` requires a 2.0.0+ version of the "
"`ethereum` package. Found {0}".format(version))
self.fork_blocks = {}
self.reset_to_genesis()
