字符串长度筛选

def solve():
    import pandas as pd
    df = pd.read_csv('https://liangdaima.com/static/data/german_credit_risk.csv')
    if 'Checking account' in df.columns:
        count = (df['Checking account'].str.len() > 10).sum()
        print(int(count))
    else:
        print(0)