Question

任何人都可以解释评论='＃'如何在pandas中的csv文件中运行

<rewrite>
  <!--This directive was not converted because it is not supported by IIS: RewriteBase /.-->
  <rules>
    <rule name="Imported Rule 1" stopProcessing="true">
      <match url="^index\.html" ignoreCase="false" />
      <action type="None" />
    </rule>
    <rule name="Imported Rule 2" stopProcessing="true">
      <match url="." ignoreCase="false" />
      <conditions>
        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
      </conditions>
      <action type="Rewrite" url="/index.html" />
    </rule>
  </rules>
</rewrite>

 <httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*" />
    <add name="Access-Control-Allow-Headers" value="*" />
    <add name="Access-Control-Allow-Credentials" value="true" />
  </customHeaders>
</httpProtocol>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
  <remove name="OPTIONSVerbHandler" />
  <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
  <remove name="OPTIONSVerbHandler" />
  <remove name="TRACEVerbHandler" />
  <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
<modules>
  <remove name="ApplicationInsightsWebTracking" />
  <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" preCondition="managedHandler" />
</modules>

Answer 1

以下是comment参数如何工作的示例：

csv_string = """col1;col2;col3
1;4.4;99
#2;4.5;200
3;4.7;65"""

# Without comment argument
print(pd.read_csv(StringIO(csv_string), sep=";"))
#   col1  col2  col3
# 0    1   4.4    99
# 1   #2   4.5   200
# 2    3   4.7    65

# With comment argument
print(pd.read_csv(StringIO(csv_string), 
                  sep=";", comment="#")) 
#    col1  col2  col3
# 0     1   4.4    99
# 1     3   4.7    65

Answer 2

您可以在文档中找到所有内容。

引用：

comment：str，默认None

表示不应解析行的剩余部分。如果在行的开头找到，则该行将被完全忽略。此参数必须是单个字符。与空行一样（只要skip_blank_lines=True），参数header将忽略完全注释的行，但skiprows不会忽略。例如，如果comment='#'，使用#emptyna,b,cn1,2,3解析header=0将导致a,b,c被视为标题。

因此，它只是忽略#之后的所有内容，直到新行或header。

在熊猫的解释中评论='＃'

2 个答案: