Question

如何在Python中的两个字符串之间过滤一段文本？

例如，我想过滤出以下文本中PreparedStatement preparedStatement = connect.prepareStatement("INSERT into employee VALUES (default,?,?)", Statement.RETURN_GENERATED_KEYS); preparedStatement.setTimestamp(1, new java.sql.Timestamp(new java.util.Date().getTime())); preparedStatement.setString(2, "Test"); preparedStatement.executeUpdate(); ResultSet tableKeys = preparedStatement.getGeneratedKeys(); tableKeys.next();和CLUSTERED BY之间的所有行：

BUCKETS

结果应为：

    CREATE TABLE some_name (
fv int,
sv int,
tv int)
CLUSTERED BY (fv,
              sv,
              tv) 
SORTED BY (fv,
           sv,
           tv) INTO 2 BUCKETS;
-- more text afterwards

Answer 1

您可以尝试以下操作：

start_word = "CLUSTERED"
end_word = "BUCKETS"

result_lines = []

with open(target_file, 'r') as f:
    erasing = False
    for line in f:
        if not erasing and start_word in line:
            // begin erasing lines
            erasing = True
            continue

        if erasing and end_word in line:
            // finished erasing lines
            erasing = False
            continue

        if erasing:
            // we are between the start and end of the section we want to erase
            continue
        else:
            // either we haven't started erasing or we have already finished
            result_lines.append(line)

print('\n'.join(result_lines))

使用Python擦除关键字定义的范围内的文件的某些行

1 个答案: