    &#39;a&#39; in x

and a quick search reveals some nice information about it: http://docs.python.org/3/tutorial/datastructures.html#dictionaries

I know Git stores information of when files get deleted and I am able to check individual commits to see which files have been removed, but is there a command that would generate a list of every deleted file across a repository&#39;s lifespan?





How can I list all the deleted files in a Git repository?

I am looking for the syntax for dumping all data in my mysql database. I don&#39;t want any table information.

mysqldump data only

What&#39;s the cleanest way to test if a dictionary contains a key?

    x = {&#39;a&#39; : 1, &#39;b&#39; : 2}
    if (x.contains_key(&#39;a&#39;)):
        ....

How to test if a dictionary contains a specific key?

What's the cleanest way to test if a dictionary contains a key?
<pre><code class="hljs language-css">x = {'a' : 1, 'b' : 2}
if (x.contains_key('a')):
 ....
</code></pre>

I have a directory on my local machine that I would like to copy to a remote machine (and rename it) using Fabric. I know I can copy file using `put()`, but what about a directory. I know it&#39;s easy enough using **scp**, but I would prefer to do it from within my `fabfile.py` if possible.

How do I copy a directory to a remote machine using Fabric?

There must be an easy way to get the file size (key size) without pulling over a whole file.  I can see it in the Properties of the AWS S3 browser.  And I think I can get it off the &quot;Content-length&quot; header of a &quot;HEAD&quot; request.  But I&#39;m not connecting the dots about how to do this with boto.  Extra kudos if you post a link to some more comprehensive examples than are in the [standard boto docs][1].

EDIT: So the following seems to do the trick (though from looking at source code I&#39;m not completely sure.):

    bk = conn.get_bucket(&#39;my_bucket_name&#39;)
    ky = boto.s3.key.Key(bk)
    ky.open_read()  ## This sends a GET request. 
    print ky.size

For now I&#39;ll leave the question open for comments, better solutions, or pointers to examples.

  [1]: http://boto.cloudhackers.com/

How do I get the file / key size in boto S3?

I&#39;m wondering about the way that python&#39;s Multiprocessing.Pool class works with map, imap, and map_async.  My particular problem is that I want to map on an iterator that creates memory-heavy objects, and don&#39;t want all these objects to be generated into memory at the same time.  I wanted to see if the various map() functions would wring my iterator dry, or intelligently call the next() function only as child processes slowly advanced, so I hacked up some tests as such:

    def g():
      for el in xrange(100):
        print el
        yield el

    def f(x):
      time.sleep(1)
      return x*x
  
    if __name__ == &#39;__main__&#39;:
      pool = Pool(processes=4)              # start 4 worker processes
      go = g()
      g2 = pool.imap(f, go)
      g2.next()

And so on with map, imap, and map_async.  This is the most flagrant example however, as simply calling next() a single time on g2 prints out all my elements from my generator g(), whereas if imap were doing this &#39;lazily&#39; I would expect it to only call go.next() once, and therefore print out only &#39;1&#39;.

Can someone clear up what is happening, and if there is some way to have the process pool &#39;lazily&#39; evaluate the iterator as needed?

Thanks,

Gabe


Python Multiprocessing.Pool lazy iteration

I&#39;m working with Python, and I&#39;m trying to find out if you can tell if a word is in a string.

I have found some information about identifying if the word is in the string - using `.find`, but is there a way to do an `if` statement. I would like to have something like the following:

    if string.find(word):
        print(&quot;success&quot;)

Check if a word is in a string in Python

I have a list of dictionaries like so:

```python
[{&#39;price&#39;: 99, &#39;barcode&#39;: &#39;2342355&#39;}, {&#39;price&#39;: 88, &#39;barcode&#39;: &#39;2345566&#39;}]
```

I want to find the `min()` and `max()` prices. Now, I can sort this easily enough using a key with a lambda expression (as found in another Stack Overflow post), so if there is no other way I&#39;m not stuck. However, from what I&#39;ve seen there is almost always a direct way in Python, so this is an opportunity for me to learn a bit more.

Content Type	Original Author	Original Content on Stackoverflow
Question	ripper234	View Question on Stackoverflow
Solution 1 - Python	cobbal	View Answer on Stackoverflow

How to test if a dictionary contains a specific key?

Python Problem Overview

Python Solutions

Solution 1 - Python

mysqldump data only

How can I list all the deleted files in a Git repository?

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