import psycopg2
import struct
import array
import matplotlib.pyplot as plt
import numpy as np
conn = psycopg2.connect(host="127.0.0.1",database="TPAS", user="postgres", password="pass")

cur  = conn.cursor()

cur.execute("SELECT * FROM muestraraw")
print("The number of parts: ", cur.rowcount)
row = cur.fetchone()
lista = []
while row is not None:
    lista.append(list(row)[10])
    row = cur.fetchone()
cur.close()
conn.close()

arr = lista[1]
arrb = arr.tobytes()
array = []
print (len(arrb))
for tx in arrb:
    array.append(tx)

#array = np.array(array)
#print (array)

plt.plot(array)
plt.show()
#print (arr.tobytes())