I'm using Python 2.7. By stuck I mean, does not pass that specific line (but no errors).
Like I said FD is a list of dictionaries. and sCommonFeatures are a subset of key's that have value in all of the dictionaries. On Fri, Jul 6, 2012 at 1:04 PM, Prasad, Ramit <ramit.pra...@jpmorgan.com>wrote: > > > I could resolve it by defining a small function: > > > > > > def getValue(mydict,keys): > > > A=[]; > > > for i in keys: > > > A=A+[mydict[i]] > > > return A > > > > > > and then calling it: D=getValue(prog,sCommonFeatures); > > > (instead of D=[prog[key1] for key1 in list(sCommonFeatures)];) > > > > > > but I'm still surprised why the latter one didn't work! > > > > It would be more efficient to do the following > > > > def getValue(mydict, keys): > > A=[] > > for i in keys: > > A.append( mydict[i] ) > > return A > > Less efficiently, but maybe more useful if you need to check > against sOtherFeatures you can do the following. > > D = [value for key, value in prog.items() if key in sOtherFeatures > or key in sCommonFeatures] # Python 3.x syntax > > > Ramit > > > Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology > 712 Main Street | Houston, TX 77002 > work phone: 713 - 216 - 5423 > > -- > This email is confidential and subject to important disclaimers and > conditions including on offers for the purchase or sale of > securities, accuracy and completeness of information, viruses, > confidentiality, legal privilege, and legal entity disclaimers, > available at http://www.jpmorgan.com/pages/disclosures/email. > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor >
_______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
