import sys

sys.path=["launchwrapper-1.11.jar"]+sys.path
sys.path=["jopt-simple-4.5.jar"]+sys.path
from net.minecraft import launchwrapper

launcher=launchwrapper.Launch
launcher.main([])

"""
Traceback (most recent call last):
  File "launcher.py", line 9, in <module>
    launcher.main([])
	at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)

java.lang.ClassCastException: java.lang.ClassCastException: org.python.core.SyspathJavaLoader cannot be cast to java.net.URLClassLoader
"""