How to use the watchtower.GithubDatabase function in watchtower

# Clean up
    all_dates = all_dates.drop(0, axis=1)
    all_dates = all_dates.replace(np.nan, 0)
    all_dates = all_dates.astype(int)
    return all_dates


# --- Run the script ---
try:
    os.makedirs("build/images")
except OSError:
    pass

meta = pd.read_csv('.project_info.csv')

db = GithubDatabase()
projects = [ii.split('/')[-2:] for ii in db.projects]
groupby = 'weekday'
start = '2017-03-01'
stop = '2017-03-13'
exceptions = []
all_dates = []
for user, project in tqdm(projects):
    try:
        this_meta = meta.query('github_org == "{}/{}"'.format(user, project))
        words = this_meta['words'].values[0]
        words = None if isinstance(words, float) else words
        words = '' if words == '' else words

        branch = this_meta['branch'].values[0]
        branch = None if isinstance(branch, float) else branch

projects = projects[list(rename.values())]
projects['url'] = projects['url'].apply(validate_url)


def is_doc(row):
    doc_words = ['doc', 'documentation', 'docathon']
    is_doc = 0
    for word in doc_words:
        if word in row['title']:
            is_doc += 1
        if word in row['label_names']:
            is_doc += 1
    return is_doc > 0

projects['doc_issues'] = None
db = GithubDatabase()
for ix, project in tqdm(projects.iterrows()):
    if not isinstance(project['github_org'], str):
        continue
    org, repo = project['github_org'].split('/')[-2:]
    proj = db.load(org, repo)
    if proj.issues is None:
        continue
    issues = proj.issues.query('state == "open"')
    issues = issues[pd.isnull(issues['pull_request'])]
    if len(issues) == 0:
        print('{}: No open issues w/o a PR'.format(repo))
        continue
    issues['is_doc'] = issues.apply(is_doc, axis=1)
    doc_issues = [{'url': issue['html_url'],
                   'title': issue['title']}
                  for ix, issue in issues.iterrows()

changes = []
    for ifile in resp['files']:
        found = 0
        for word in search_words:
            ifilename = ifile['filename'].lower()
            if word in ifilename and not any(bword in ifilename for bword in DOC_CHEATING_WORDS):
                found += 1
        found = found > 0
        changes.append({'filename': ifile['filename'],
                        'changes': ifile['changes'],
                        'additions': ifile['additions'],
                        'deletions': ifile['deletions'],
                        'found': found})
    return pd.DataFrame(changes)

db = GithubDatabase()
meta = pd.read_csv('.project_info.csv')

all_diffs = []
for proj in db.projects:
    print(proj)
    user, project = proj.split('/')
    this_meta = meta.query('github_org == "{}/{}"'.format(user, project))
    branch = this_meta['branch'].values[0]
    branch = None if isinstance(branch, float) else branch
    diffs = find_commit_diffs(user, project, branch=branch)
    if diffs is None or len(diffs) == 0:
        continue
    diffs['project'] = project
    diffs['user'] = user
    all_diffs.append(diffs)