Edit file python

import importlib
uproot = importlib.import_module("uproot")
t = uproot.open("test.root")["hvar"]

for i in range(0, 400):
    with open('/home/reik/HEP/uproot-dev/uproot/uproot/write/objects/TH.py', 'r') as file:
        # read a list of lines into data
        data = file.readlines()

    # now change the 2nd line, note that you have to add a newline
    data[229] = '                self.start = {}\n'.format(i)

    # and write everything back
    with open('/home/reik/HEP/uproot-dev/uproot/uproot/write/objects/TH.py', 'w') as file:
        file.writelines(data)

    try:
        print(i)
        uproot = importlib.reload("uproot")
        print("Hi")
        with uproot.recreate("example.root") as f:
            f["test"] = t
        f = uproot.open("example.root")["test"]
    except:
        continue
    break