Is it possible to force pandas not to convert data type when using DataFrame.replace : <p>Here's a working example:</p>

<pre><code>df = pd.DataFrame({'A': [-39882300000000000000]}, dtype='object')
</code></pre>

<p><code>df.replace({',': '.'})</code>  raises an <code>OverflowError</code> because somewhere in the code the <code>convert</code> flag is set to True. I am not sure but it is probably because pandas is inferring that it only contain numbers.</p>

<p>I read the data from an Excel workbook and I want to prevent this conversion when using <code>df.replace</code>. Is there a way to do so?</p>
