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append new row to old csv file python
...with statement to avoid leaving the file open.
The key point is using 'a' for appending when you open the file.
import csv
fields=['first','second','third']
with open(r'name', 'a') as f:
writer = csv.writer(f)
writer.writerow(fields)
If you are using Python 2.7 you may experience supe...
Amazon Interview Question: Design an OO parking lot [closed]
...ons will it have. It should say, full, empty and also be able to find spot for Valet parking. The lot has 3 different types of parking: regular, handicapped and compact.
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How to set a cookie for another domain
...pecific page of this site is loaded, say page link, I like to set a cookie for another site called b.com , then redirect the user to b.com .
...
How to access data/data folder in Android device?
....ab' file on your computer contains all application data in android backup format. Basically it's a compressed tar file. This page explains how you can use OpenSSL's zlib command to uncompress it.
You can use the adb restore backup.db command to restore the backup.
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How to export all data from table to an insertable sql format?
...e scripts options is at the top level of the context menu Thanks to Daniel for the comment to update.
Select generate scripts
Click next
Choose tables
Click next
Click advanced
Scroll to Types of data to script - Called types of data to script in SMSS 2014 Thanks to Ellesedil for commenting
Select d...
Understanding implicit in Scala
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I'll explain the main use cases of implicits below, but for more detail see the relevant chapter of Programming in Scala.
Implicit parameters
The final parameter list on a method can be marked implicit, which means the values will be taken from the context in which they are call...
Neo4j - Cypher vs Gremlin query language
...to develop with Neo4j using the REST API.
I saw that there are two options for performing complex queries - Cypher (Neo4j's query language) and Gremlin (the general purpose graph query/traversal language).
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How add context menu item to Windows Explorer for folders [closed]
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In the registration editor (regedit.exe) find:
Context menu for right click on folders in left panel of Windows Explorer or on background of a directory in right panel:
HKEY_CLASSES_ROOT\Directory\Background\shell if you are administrator
HKEY_CURRENT_USER\Software\Classes\directory...
Why was the switch statement designed to need a break?
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Many answers seem to focus on the ability to fall through as the reason for requiring the break statement.
I believe it was simply a mistake, due largely because when C was designed there was not nearly as much experience with how these constructs would be used.
Peter Van der Linden makes the c...
How do I get the last inserted ID of a MySQL table in PHP?
...the function to a given client is the first AUTO_INCREMENT value generated for most recent statement affecting an AUTO_INCREMENT column by that client. This is the reason you should not use select MAX(ID)
– woens
Oct 4 '12 at 20:15
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