iterating over a postgresql table and updating rows from python -

-

I am using Python 3 and psycopg2 to connect to a postgrascape table.

Two columns in the table: First there is some changing string and the second is an empty string.

I want to go to all rows and for each row, read the string in the first column, calculate some dragon-implementation function on it, and update the second column with that result.

What would be the most effective (and hopefully idiomatic) way?

Please assume that I should be connected to DB Python

In the most effective way, to copy a column into a text file, Feed through the dragon, minimize the table, and then copy the resultant two columns back.


Comments

Post a Comment

Popular posts from this blog

c# - Highlight all words containing a letter in a richtextbox -

-
How do I highlight all the words in a letter in a rich text box? If I want to expose the words that contain the letters "a", such as a hat or candle word, both words are highlighted, I am using C # on Winform. Private Zero Button 208_Click (Object Sender, EventArgs E) {HighlightFrage (Rich Textbox 1, "A", Color. Yellow); } It exposes all the words with a word "a", but I'm not sure how to highlight the length of the spaces. Thank you. You can use the method to find incidents of sub-location. Then, use the property to change the colors back to Highlight colors for each event. int len ​​= richTextBox.TextLength; Int index = 0; String textconfind = "A"; // This will highlight the text you are viewing (index & lt; len) {richTextBox.Find (textToFind, index, len, RichTextBoxFinds.None); RichTextBox.SelectionBackColor = Color.Yellow; Index = rich textbox. Lesson Index (texttofind, index) + textaophind Langeline; } If you want...
Read more

Admob interstitials not clickable on Nexus 5 (Android 4.4.2) -

-
Image
Do you know about a problem due to Admob not being able to click on interstitial ads and therefore on Nexus 5 devices Have not brought any revenue? Fact: It does not have intermediate ads - some clickable, but mostly no . It comes with the old standalone Google Admob SDK and with the new Google Play Services SDK. It is on Nexus 5 with Android 4.4.2 , but it is possible that other devices are also affected. This happens in many programs in the Google Play Store - I'm not only with my application. For example, you can not Galaxy Nexus (Nexus 3), Galaxy S, on the HTC One. Below is a screenshot that opens the small info button in the clickable below the ad and OK, the Close X button also looks working properly , Though clicking on the ad does not happen - like it does not exist or something on it. Do you know of any solutions or possible solutions to the problem? Thanks! --- Update - - This activity declaration is: & amp; Activity Activity:...
Read more

java - MigLayout - selective component fill -

-
Image
I am trying to add a JTabbedPane to a panel, as well as for control I am using Migrates with the following buttons. However, I can not even get the JTabbedPane to fill without the buttons when they are not needed. The following SSCCE: public static zero main (string [] args) {jpn panel = new zpinal (new megallout (new lc.) Filling ())) ; Panel.add (new pocket ("+"); Panel.add (new pocket ("-"), "wrap"); Panel.ed (new zetaabbedpan (), "duration, increase"); Jeffre Frame = New Gefram (); Frame.add (panel); Frame.setSize (new dimension (300, 500)); Frame.setLocationRelativeTo (zero); Frame.setVisible (true); Frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); } This creates a panel that looks like this: However, if I lack layout ( JPanel panel = new JPanel (new MigLayout)); ), looks like: If you do not want to apply a barrier to all the cells, do not say the layout ;-), instead, use the column and row barr...
Read more