import pandas as pd
import math

df = pd.read_csv('putnam.csv')
df['lean4_proof'] = ''

for i, row in df.iterrows():
    stmt = row['lean4_statement']
    if type(stmt) is not str:
        df.drop(i)
        continue
    split = stmt.split('\n')
    stmt = "\n".join([i.replace("sorry", "") for i in split if not i.startswith("abbrev")])
    print(stmt)
    print("*"*50)
df.to_csv('putnam.csv', index=False)