def Hamiltonian_from_file(file_name):
"""Creates a matrix operator out of a file with a list
of Paulis.
Args:
file_name : a text file containing a list of Paulis and
coefficients.
Returns:
A matrix representing pauli_list
"""
with open(file_name, 'r+') as file:
ham_array = file.readlines()
ham_array = [x.strip() for x in ham_array]
pauli_list = []
for i in range(len(ham_array) // 2):
pauli = label_to_pauli(ham_array[2 * i])
Numb = float(ham_array[2 * i + 1])
pauli_list.append([Numb, pauli])
return pauli_list
def Hamiltonian_from_file(file_name):
"""Creates a matrix operator out of a file with a list
of Paulis.
Args:
file_name : a text file containing a list of Paulis and
coefficients.
Returns:
A matrix representing pauli_list
"""
with open(file_name, 'r+') as file:
ham_array = file.readlines()
ham_array = [x.strip() for x in ham_array]
pauli_list = []
for i in range(len(ham_array) // 2):
pauli = label_to_pauli(ham_array[2 * i])
Numb = float(ham_array[2 * i + 1])
pauli_list.append([Numb, pauli])
return pauli_list
