... dict.fromkeys([1, 2, 3, 4]) This is actually a classmethod, so it works for dict-subclasses (like collections.defaultdict) as well. The optional second argument specifies the value to use for the keys (defaults to None.) ...

...ggests optparse which is appropriate for older Python versions. For Python 2.7 and above, argparse replaces optparse. See this answer for more information. As other people pointed out, you are better off going with optparse over getopt. getopt is pretty much a one-to-one mapping of the standard ge...

...e pioneers introducing closures in Java. His post on closures from January 28, 2007 is named A Definition of Closures On his blog there is lots of information to get you started as well as videos. An here is an excellent Google talk - Advanced Topics In Programming Languages - Closures For Java with...

... | edited Nov 3 '08 at 9:24 answered Nov 2 '08 at 21:40 Gr...

...runtime does not persist the level change. UPDATE: If you are using Log4j 2 you should remove the calls to setLevel per the documentation as this can be achieved via implementation classes. Calls to logger.setLevel() or similar methods are not supported in the API. Applications should remove ...

... answered Mar 18 '14 at 5:25 Xavier DucrohetXavier Ducrohet 26.9k55 gold badges8181 silver badges6262 bronze badges ...

... answered Jul 14 '10 at 2:08 Scott StaffordScott Stafford 38.9k2020 gold badges110110 silver badges158158 bronze badges ...

... | edited Apr 25 '17 at 13:53 Abdull 21.9k1919 gold badges110110 silver badges155155 bronze badges ...

... 206 +500 A good...

... 126 Followed by @Andy's answer, you can do following to solve your second question: In [56]: df.gr...