with open(filename, 'rb') as f:
for line in f:
<do something with the line>
構造可迭代對象 f,進行迭代遍歷:for line in f,會自動地使用緩沖IO(buffered IO)以及內(nèi)存管理,而不必擔心任何大文件的問題。
with open(filename, 'rb') as f:
for line in f:
<do something with the line>
構造可迭代對象 f,進行迭代遍歷:for line in f,會自動地使用緩沖IO(buffered IO)以及內(nèi)存管理,而不必擔心任何大文件的問題。