rasperry pi message emitter for xmas

xmas.py

import requests

url = 'http://192.168.178.134:8080'

chars = {
    " ": [
        '0',
        '0',
        '0',
        '0'
    ],
    "C": [
        '1111',
        '1000',
        '1000',
        '1111'
    ],
    "D": [
        '1111',
        '1000',
        '1000',
        '1111'
    ]
}

input = "CDE CE CD"

def sendPattern(delay, patterns):
    requests.post(url, '\n'.join(map(lambda x: str(delay) + "-" + str(x), patterns)))

lines = [
    '',
    '',
    '',
    ''
]

for char in list(input):
    #print(char)
    char = char.upper()
    if not char in chars:
        continue

    lines[0] += chars[char][0] + '0'
    lines[1] += chars[char][1] + '0'
    lines[2] += chars[char][2] + '0'
    lines[3] += chars[char][3] + '0'

messages = []
for index in range(0, len(lines[0]) - 4):
    message = lines[0][index:index+4]
    message += lines[1][index:index+4]
    message += lines[2][index:index+4]
    message += lines[3][index:index+4]
    messages.append(message)

print(messages)
sendPattern(300, messages)