实现标签CRUD与冲突检测

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    tags = pd.read_csv(StringIO(open_url(____).read()))
    class TagMgr:
        def __init__(____):
            self.tags = {r['____']:dict(____) for _,r in df.iterrows()}
        def add(____):
            if any(t['____']==uid and t['____']==name for t in self.tags.values()):
                return False, '____'
            nid = f'____'
            self.tags[nid] = {'____':nid,'____':uid,'____':name,'____':color}
            return True, nid
        def user_tags(____):
            return [t for t in self.tags.values() if t['____']==uid]
    mgr = TagMgr(____)
    ok, r = mgr.add(____); print(____)
    ok2, r2 = mgr.add(____); print(____)
    print(____)