#!/usr/bin/env python
# coding: utf-8

# # Explore edges.

# In[1]:


from tf.app import use


# In[2]:


A = use("ETCBC/bhsa:clone", hoist=globals())


# First determine the from-types and the to-types of nodes connected by a mother edge:

# In[3]:


fromTypes = set()
toTypes = set()

for f in N.walk():
    ts = E.mother.f(f)
    if ts:
        fromTypes.add(F.otype.v(f))
        for t in ts:
            toTypes.add(F.otype.v(t))

print(f"From types: {sorted(fromTypes)}")
print(f"To types: {sorted(toTypes)}")


# Now list how many edges there are between all these types:

# In[4]:


for fT in sorted(fromTypes):
    for tT in sorted(toTypes):
        n = E.mother.freqList(nodeTypesFrom=fT, nodeTypesTo=tT)
        if n:
            print(f"{fT:>20} =mother({n:>6}x)=> {tT}")