<p>我试图使用python中的open()函数读取JPG图像的上下文,但是只读取文件的前3行</p>
<pre class="lang-py prettyprint-override"><code>file = open(dir, 'r') # dir = imgServer.jpg
data = file.read()
print data # only the first 3 lines
</code></pre>
<p>我试着一行一行地读:</p>
<pre class="lang-py prettyprint-override"><code>file = open(dir, 'r') # dir = imgServer.jpg
data = ''
for line in file:
data += line
print data # only the first 3 lines
</code></pre>
<p>但结果是一样的</p>