def iter_file(path, size=1024): with open(path, "rb", ) as f: for data in iter(lambda: f.read(size), b‘‘): yield data for row in iter_file("manage.py"): print(row)
—— 用迭代器去读取文件中的内容，防止文件太大一次性读取的话占用过大内存！
下面这样一次性读取的方式不可取
with open("manage.py", "r") as f: print(f.read())
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原文：https://www.cnblogs.com/paulwhw/p/11625452.html