if variable exists then def run otherwise continue python script code example
Example: how to check if var exists python
# for local
if 'myVar' in locals():
# myVar exists.
# for globals
if 'myVar' in globals():
# myVar exists.
# for local
if 'myVar' in locals():
# myVar exists.
# for globals
if 'myVar' in globals():
# myVar exists.