I'm trying to make a simple program that can reliably upload an OP_RETURN transaction. I have found some examples online, but so far they don't work consistently. The ones that go through seem to be random. Here are the transactions that went through

https://blockchain.info/address/1Eoo7G7u97EMwptSxjYjpvdx9zYcqJBn9y

It is very hit or miss every time I try. I have been entirely unable to upload any transactions using the script, however once in a while if I upload the raw transaction using blockchain they go through. Any ideas? Here is the error message.

Traceback (most recent call last):
  File "/Users/JC/Documents/DevelopmentStuff/programming /Python/bit/op-return_test2.py", line 51, in <module>
    print(pushtx(tx))
  File "/Library/Python/2.7/site-packages/bitcoin/bci.py", line 237, in pushtx
    return f(*args)
  File "/Library/Python/2.7/site-packages/bitcoin/bci.py", line 192, in bci_pushtx
    return make_request('https://blockchain.info/pushtx', 'tx='+tx)
  File "/Library/Python/2.7/site-packages/bitcoin/bci.py", line 23, in make_request
    raise Exception(p)
Exception: None Standard Script Output OP_RETURN 48656c6c6f

Here is the code. I would really appreciate any help. Thanks

# coding: utf-8

from bitcoin import *
import binascii
from test import *



priv = "Private key"

pub = "1Eoo7G7u97EMwptSxjYjpvdx9zYcqJBn9y"

addr= "1Eoo7G7u97EMwptSxjYjpvdx9zYcqJBn9y"
inputs = unspent(addr)

message = "Hello"
FullLen = format(len(message)+2,'x').rjust(2,'0') 
MessageLen = format(len(message),'x').rjust(2,'0')
ID = binascii.hexlify(str(message))
#snd = "6a4c28"+ID
snd = "6a"+MessageLen+ID
print hexlify(chr(len(message)))
print MessageLen
print snd
#snd = "6a4c"+MessageLen+ID
#print snd
newScriptPubKey = "6a" + hexlify(chr(len(message)))+ hexlify(message)
#print newScriptPubKey

outputs = [{'value': 50000, 'address': addr}, {'value': 0, 'script': snd}]

fee = 10000

tx = mksend(inputs, outputs, addr, fee)

dt = deserialize(tx)
ins = dt['ins']

#print addr
#print ins

print tx
for ind, elm in enumerate(ins):
    print elm
    tx = sign(tx, ind, priv)

print tx



print(pushtx(tx)) # Error is raised on this line