Upload large file to GCS with requests and resumable api (python 2.7)

status.py

#python3.7
import requests
from datetime import datetime
import time

file_size = 2194418361937 #TODO size in bytes
LOCATION = "https://storage.googleapis.com/upload/storage/v1/b/sc-9369-dataengineering-prod-qeppo-arch/o?uploadType=resumable&name=****" #TODO change location upload

while True:
    res = requests.put(
        url=LOCATION,
        headers={
            'Content-Length': '0',
            "Content-Range": "bytes */file_size",
        })
    res.raise_for_status()
    range = res.headers['range']
    bytes = int(range.replace('bytes=0-', ''))

    percentage = bytes / file_size * 100
    print((datetime.now().strftime("%d-%m-%y %H:%M   ") + ("%.1f" % percentage) + "%") + "  " + (
            "%.2f" % ((file_size - bytes) / 1024 / 1024 / 1024)) + "GB")
    time.sleep(5)

upload_gcs.py

#python 2.7
from datetime import datetime
from requests.adapters import HTTPAdapter
from urllib3 import Retry
import requests

CHUNK_SIZE = max(262144, 1024 * 1024 * 100)

FILENAME = 'filename' #TODO
TOKEN = "TOKEN" #TODO

file_size = 2194418361937 #TODO

def read_in_chunks(file_object, chunk_size=CHUNK_SIZE):
    offset = -1
    while True:
        data = file_object.read(chunk_size)
        if not data:
            break
        start_offset = offset + 1
        offset = offset + len(data)
        yield data, start_offset, offset
        
progress_percentage = '-1'

def progress(percentage):
    global progress_percentage
    if progress_percentage != percentage:
        print datetime.now().strftime("%d-%m-%y %H:%M   ") + ("%.1f" % percentage) + "%"
    progress_percentage = ("%.1f" % percentage)

retry_strategy = Retry(connect=5, read=5, status=5, status_forcelist=[500], raise_on_status=True)
adapter = HTTPAdapter(max_retries=retry_strategy)

with open(FILENAME, 'rb') as f:
    res = requests.post(
        url='https://storage.googleapis.com/upload/storage/v1/b/sc-9369-dataengineering-prod-qeppo-arch/o?uploadType=resumable&name={path}_{filename}'.format(
            path=datetime.now().strftime("%d_%m_%y_%H_%M"), filename='filename'), #TODO change filename
        headers={
            'X-Upload-Content-Type': 'text/csv',
            "Authorization": "Bearer " + TOKEN,
        })
    res.raise_for_status()
    location = res.headers['location']
    print location
    for piece, first_byte, last_byte in read_in_chunks(f):
        content_range = "bytes {first_byte}-{last_byte}/{file_size}".format(first_byte=first_byte, last_byte=last_byte,
                                                                            file_size=file_size)
        progress(float(first_byte) / float(file_size) * float(100))
        with requests.Session() as session:
            session.mount("https://", adapter)
            response = session.put(location, data=piece, headers={
                "Content-Length": str(len(piece)),
                "Content-Range": content_range
            })
            response.raise_for_status()
            progress(float(first_byte) / float(file_size) * float(100))