Python 高效文件读写与上下文管理器 with 语句实战
一、安全读写超大文件
def process_large_file(filepath: str):
with open(filepath, 'r', encoding='utf-8') as f:
for line in f: # 惰性按行流式迭代，避免内存爆满
if 'ERROR' in line:
yield line.strip()def process_large_file(filepath: str):
with open(filepath, 'r', encoding='utf-8') as f:
for line in f: # 惰性按行流式迭代，避免内存爆满
if 'ERROR' in line:
yield line.strip()