Question

我试图用csv中单个列中的空格替换所有逗号。我在这里尝试了以下方法：

function btnOnClick(btn) {
    // first parentNode is td, second is tr
    var row = btn.parentNode.parentNode;
    // process row.
}

但是我收到以下错误：

 <div class="row" style="margin-top:200px">
    <div class="col-md-3">
        <ul class="list-group">
            <li class="list-group-item">First item</li>
            <li class="list-group-item">Second item</li>
            <li class="list-group-item">Third item</li>
        </ul>
    </div>
    <div class="col-md-9">
        <div class="row">
            <div class="col-md-9">
                <!--Put here your long paragraph-->
                Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
                <br/><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
                Lorem Ipsum is simply dummy text of the printing and typesetting industry.
                <br /><br /><br />
            </div>
            <div class="col-md-2 pull-right" style="position:fixed; right: 0">
                <ul class="list-group ">
                    <li class="list-group-item">First item</li>
                    <li class="list-group-item">Second item</li>
                    <li class="list-group-item">Third item</li>
                    <li class="list-group-item">First item</li>                      
                </ul>
            </div>
        </div>

    </div>
</div>

我对此错误消息的性质进行了一些研究，但我无法确定在分配之前我将引用变量的位置。

Answer 1

假设df["column_name"]的类型为string，则应该有效：

df["column_name"].str.replace(","," ")

您可以将结果分配给列：

df["column_name"] = df["column_name"].str.replace(","," ")

Answer 2

您可能必须将Regex标志设置为True

 df["column_name"].replace(",", " ", regex=True)

在csv错误中用空格替换所有逗号

2 个答案: