以pandas df为例，该列的所有整数均为整数，而有些则为NAN。
raw
capitalSurplus 188883000
totalLiab 2589242000
totalStockholderEquity 6740732000
minorityInterest 27549000
otherCurrentLiab 40412000
totalAssets 9357523000
endDate 1483142400
commonStock 5818867000
retainedEarnings 732982000
otherLiab 746117000
otherAssets 6034000
totalCurrentLiabilities 436539000
propertyPlantEquipment 9135741000
totalCurrentAssets 212758000
longTermInvestments 2990000
netTangibleAssets 6740732000
netReceivables 201288000
longTermDebt 1406586000
accountsPayable 396127000
otherCurrentAssets NAN
ps。 df已转置。
期望结果是，尽管有NAN列，但所有列的最后三位数字（'000'）被删除
并保持endDate不变：
endDate 1483142400
答案 0 :(得分：0)
如果12:12:38 PM: Executing tasks 'clean install'...
Executing tasks: [clean, install]
:package-name:clean
:package-name:preBuild UP-TO-DATE
:package-name:preReleaseBuild UP-TO-DATE
:package-name:compileReleaseAidl NO-SOURCE
:package-name:compileReleaseRenderscript
:package-name:checkReleaseManifest
:package-name:generateReleaseBuildConfig
:package-name:generateReleaseResValues
:package-name:generateReleaseResources
:package-name:packageReleaseResources
:package-name:processReleaseManifest
:package-name:generateReleaseRFile
:package-name:prepareLintJar UP-TO-DATE
:package-name:generateReleaseSources
:package-name:javaPreCompileRelease
:package-name:compileReleaseJavaWithJavac
:package-name:extractReleaseAnnotations
:package-name:mergeReleaseConsumerProguardFiles UP-TO-DATE
:package-name:mergeReleaseShaders
:package-name:compileReleaseShaders
:package-name:generateReleaseAssets
:package-name:packageReleaseAssets
:package-name:packageReleaseRenderscript NO-SOURCE
:package-name:processReleaseJavaRes NO-SOURCE
:package-name:transformResourcesWithMergeJavaResForRelease
:package-name:transformClassesAndResourcesWithSyncLibJarsForRelease
:package-name:compileReleaseNdk NO-SOURCE
:package-name:mergeReleaseJniLibFolders
:package-name:transformNativeLibsWithMergeJniLibsForRelease
:package-name:transformNativeLibsWithSyncJniLibsForRelease
:package-name:bundleReleaseAar
...src/main/java/.../DjangoErrorListener.java:19: error: package com.android.volley does not exist
import com.android.volley.AuthFailureError;
^
...src/main/java/.../DjangoErrorListener.java:20: error: package com.android.volley does not exist
import com.android.volley.ClientError;
^
...src/main/java/.../DjangoErrorListener.java:21: error: package com.android.volley does not exist
import com.android.volley.NetworkError;
^
… MANY SIMILAR ERRORS …
^
...src/main/java/.../DjangoErrorListener.java:32: error: package Response does not exist
public abstract class DjangoErrorListener implements Response.ErrorListener {
^
...src/main/java/.../DjangoErrorListener.java:64: error: cannot find symbol
public void onErrorResponse(VolleyError error) {
^
symbol: class VolleyError
location: class DjangoErrorListener
...src/main/java/.../DjangoBaseRequest.java:20: error: package android.support.annotation does not exist
import android.support.annotation.Nullable;
^
symbol: class JsonRequest
...src/main/java/.../DjangoBaseRequest.java:68: error: package Response does not exist
Response.Listener<T> listener,
^
...src/main/java/.../DjangoBaseRequest.java:76: error: cannot find symbol
abstract protected Response<T> parseNetworkResponse(NetworkResponse response);
^
symbol: class NetworkResponse
location: class DjangoBaseRequest<T>
where T is a type-variable:
T extends Object declared in class DjangoBaseRequest
...src/main/java/.../DjangoBaseRequest.java:76: error: cannot find symbol
abstract protected Response<T> parseNetworkResponse(NetworkResponse response);
^
symbol: class Response
location: class DjangoBaseRequest<T>
where T is a type-variable:
T extends Object declared in class DjangoBaseRequest
...src/main/java/.../DjangoJSONArrayResponseRequest.java:21: error: package android.support.annotation does not exist
import android.support.annotation.Nullable;
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:23: error: package com.android.volley does not exist
import com.android.volley.NetworkResponse;
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:27: error: package com.android.volley.toolbox does not exist
import com.android.volley.toolbox.JsonRequest;
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:61: error: package Response does not exist
Response.Listener<JSONArray> listener,
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:85: error: package Response does not exist
Response.Listener<JSONArray> listener,
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:104: error: cannot find symbol
protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) {
^
symbol: class NetworkResponse
location: class DjangoJSONArrayResponseRequest
...src/main/java/.../DjangoJSONArrayResponseRequest.java:104: error: cannot find symbol
protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) {
^
...src/main/java/.../DjangoJSONObjectRequest.java:23: error: package com.android.volley does not exist
import com.android.volley.NetworkResponse;
^
...src/main/java/.../DjangoJSONObjectRequest.java:62: error: package Response does not exist
Response.Listener<JSONObject> listener,
^
… MANY SIMILAR ERRORS …
...src/main/java/.../DjangoJSONObjectRequest.java:84: error: package Response does not exist
Response.Listener<JSONObject> listener,
^
...src/main/java/.../DjangoJSONObjectRequest.java:103: error: cannot find symbol
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
^
symbol: class NetworkResponse
location: class DjangoJSONObjectRequest
...src/main/java/.../DjangoJSONObjectRequest.java:103: error: cannot find symbol
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
^
symbol: class Response
location: class DjangoJSONObjectRequest
...src/main/java/.../DjangoBaseRequest.java:67: error: cannot find symbol
@Nullable String jsonRequest,
^
… MANY SIMILAR ERRORS …
symbol: class Nullable
location: class DjangoJSONObjectRequest
...src/main/java/.../DjangoJSONObjectRequest.java:85: error: cannot find symbol
@Nullable DjangoErrorListener errorListener,
^
symbol: class Nullable
location: class DjangoJSONObjectRequest
...src/main/java/.../DjangoBaseRequest.java:81: error: malformed HTML
* @return Map<String, String> a Map of headers
^
...src/main/java/.../DjangoBaseRequest.java:81: error: bad use of '>'
* @return Map<String, String> a Map of headers
^
...src/main/java/.../DjangoBaseRequest.java:82: error: reference not found
* @throws AuthFailureError from super
^
...src/main/java/.../DjangoBaseRequest.java:65: warning: no @param for context
public DjangoBaseRequest(int method,
^
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
...src/main/java/.../DjangoErrorListener.java:62: error: reference not found
* @param error A {@link VolleyError} object.
^
...src/main/java/.../DjangoJSONArrayResponseRequest.java:46: error: reference not found
* Based on {@link com.android.volley.toolbox.JsonObjectRequest}
^
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
...src/main/java/.../DjangoJSONObjectRequest.java:47: error: reference not found
* Based on {@link com.android.volley.toolbox.JsonObjectRequest}
^
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
javadoc: warning - Class Nullable not found.
:package-name:javadoc
6 errors
62 warnings
:package-name:javadoc FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':package-name:javadoc'.
> Javadoc generation failed. Generated Javadoc options file (useful for troubleshooting): '...build/tmp/javadoc/javadoc.options'
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 1s
23 actionable tasks: 21 executed, 2 up-to-date
12:12:40 PM: Tasks execution finished 'clean install'.
不是NAN，则可以使用np.nan替换它们。
其中，我通过使用df.replace
A,B
然后，您可以使用内置功能floordiv()进行以下操作：
df.columns = ['A','B']这将删除endDate行以外的最后3个零，并更新相应索引中的B列。
或者，您也可以使用df.B.update(df[df.A!='endDate']['B'].floordiv(1000))
删除最后3个零，如下所示：
//