append

问题 I have this function: Dim db As DAO.Database Dim strInsert As String Set db = CurrentDb strInsert = "INSERT INTO items_affected_Table(CR_Id, VerOld, Equipment_Serial, Document_No, Description, Version) SELECT Items_affected_Table.CR_Id, Items_affected_Table.Version, Items_affected_Table.Equipment_Serial, Items_affected_Table.Document_No, Items_affected_Table.Description, Items_affected_Table.VerNext FROM Items_affected_Table WHERE (((Items_affected_Table.CR_Id)=[Forms]![CR form-unapproved]!

问题 I am following up on my own question. By using: excelWorkbook.SaveAs('figtest.xlsx'); I am overwriting the existing excel. I have created a function which uses the code to save two images to excel. Now I want to iterate over a number of images, process each image and then save the result alongside the original image to an excel. Obviously calling the function each iteration is a bad idea since, each iteration is deleting the results of former iterations. How can I add the current data to the

问题 I have a data frame that I initialize out of scope of a local method. I would like to do as follows: def outer_method(): ... do outer scope stuff here df = pd.DataFrame(columns=['A','B','C','D']) def recursive_method(arg): ... do local stuff here # func returns a data frame to be appended to empty data frame results_df = func(args) df.append(results_df, ignore_index=True) return results recursive_method(arg) return df However, this does NOT work. The df is always empty if I append to it this

问题 I have a vector of 13 entities in Matlab. a=[3 4 6 8 1 5 8 9 3 7 3 6 2] I want to append values [1 2 3 4 5] at regular intervals at position 1 5 9 13 & 17. The final value of a looks like this. a=[ 1 3 4 6 2 8 1 5 3 8 9 3 4 7 3 6 5 2]. The values with italics show the appended values. How can I do it? 回答1: Since you are looking for regular intervals, you can take advantage of the reshape and cat function: a = [3 4 6 8 1 5 8 9 3 7 3 6 2]; v = [1 2 3 4 5]; l = [1 5 9 13 17]; interval = l(2)-l(1

问题 I have two pandas dataframes df1 = DataFrame([[0,123,321],[0,1543,432]], columns=['A', 'B','C']) df2 = DataFrame([[1,124],[1,1544]], columns=['A', 'C']) I want to merge these so that the new dataframe would look like below A | B | C 0 123 321 0 1543 432 1 null 124 1 null 1544 I have tried using append and concat but nothing seems to work. Any help would be much appreciated. 回答1: from doc-ref ref try: df1.append(df2, ignore_index=True) sample output: A B C 0 0 123 321 1 0 1543 432 2 1 NaN 124

问题 Can anyone tell me how to append data to a file that already has data in Android? I wrote some code but it's not working. This is my activity: package updatefile.developer.com.updatefiledemo; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.Toast; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream;

问题 My version of pandas is: pd.__version__ '0.25.3' I have two dataframes , below is a sample, with the majority of the columns being the same across the two dataframes . I am trying to find the common columns , and create a new dataframe with all the common columns that shows their difference in values. A sample from c_r dataframe: Comp_name EOL - CL Per $ Access - CL Per $ Total Impact - CL Per $ Nike -0.02 -0.39 -0.01 Nike -0.02 -0.39 -0.02 Adidas -0.02 -0.39 -0.01 Adidas -0.02 -0.39 -0.02 A

问题 This question already has answers here : What is the difference between Python's list methods append and extend? (20 answers) Why does += behave unexpectedly on lists? (9 answers) Closed 2 years ago . For Python list, is append() the same as += ? I know that + will lead to the creation of a new list, while append() just append new stuff to the old list. But will += be optimized to be more similar to append() ? since they do the same thing. 回答1: It's an __iadd__ operator. Docs. Importantly,

问题 This question already has answers here : What is the difference between Python's list methods append and extend? (20 answers) Why does += behave unexpectedly on lists? (9 answers) Closed 2 years ago . For Python list, is append() the same as += ? I know that + will lead to the creation of a new list, while append() just append new stuff to the old list. But will += be optimized to be more similar to append() ? since they do the same thing. 回答1: It's an __iadd__ operator. Docs. Importantly,

问题 This question already has answers here : What is the difference between Python's list methods append and extend? (20 answers) Why does += behave unexpectedly on lists? (9 answers) Closed 2 years ago . For Python list, is append() the same as += ? I know that + will lead to the creation of a new list, while append() just append new stuff to the old list. But will += be optimized to be more similar to append() ? since they do the same thing. 回答1: It's an __iadd__ operator. Docs. Importantly,