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SymPy | Prufer.rank() in Python
  • Last Updated : 26 Aug, 2019

Prufer.rank() : rank() is a sympy Python library function that returns the rank of the Prufer sequence.

Syntax :
sympy.combinatorics.Prufer.prufer.rank()

Return :
rank of the Prufer sequence

Code #1 : rank() Example




# Python code explaining
# SymPy.Prufer.rank()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
  
# Using from 
# sympy.combinatorics.prufer.Prufer.rank()
  
# Creating Prufer
a = Prufer([1, 2, 3], [2, 4, 5])
  
# rank value
print ("Prufer a rank : ", a.rank)

Output :



Prufer a rank : 38

Code #2 : rank() Example




# Python code explaining
# SymPy.Prufer.rank()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
  
# Using from 
# sympy.combinatorics.prufer.Prufer.rank()
  
# Creating Prufer
b = Prufer([1, 2, 3, 2, 4, 5], [6, 7], [8])
  
# rank value
print ("Prufer b rank : ", b.rank)

Output :

Prufer b rank : 42661

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