python Programming Glossary: nums
How to efficiently calculate a running standard deviation? http://stackoverflow.com/questions/1174984/how-to-efficiently-calculate-a-running-standard-deviation do the work for you efficiently from numpy import array nums array 0.01 0.01 0.02 0.04 0.03 0.00 0.02 0.02 0.03 0.02 0.01.. 0.01 0.02 0.02 0.03 0.02 0.01 0.00 0.01 0.05 0.03 print nums.std axis 1 # 0.0116619 0.00979796 0.00632456 0.01788854 print.. axis 1 # 0.0116619 0.00979796 0.00632456 0.01788854 print nums.mean axis 1 # 0.022 0.018 0.02 0.02 By the way there's some..
Evaluating a mathematical expression in a string http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string Word Combine Group Optional ZeroOrMore Forward nums alphas oneOf import math import operator __author__ 'Paul McGuire'.. point Literal . e CaselessLiteral E fnumber Combine Word nums nums Optional point Optional Word nums Optional e Word nums.. Literal . e CaselessLiteral E fnumber Combine Word nums nums Optional point Optional Word nums Optional e Word nums nums..
python: convert “5,4,2,4,1,0” into [[5, 4], [2, 4], [1, 0]] http://stackoverflow.com/questions/5083194/python-convert-5-4-2-4-1-0-into-5-4-2-4-1-0 apply that prior to the other transforms discussed here nums int x for x in num_str.split zip iter nums 2 # etc etc etc As.. discussed here nums int x for x in num_str.split zip iter nums 2 # etc etc etc As pointed out in the comments with Python 2.4.. with a Generator Expression by replacing the with as in nums int x for x in num_str.split zip nums nums 5 4 2 4 1 0 3 0 5..
Split string by count of characters http://stackoverflow.com/questions/7111068/split-string-by-count-of-characters `s`. for start in range 0 len s n yield s start start n nums 1.012345e0070.123414e 004 0.1234567891.21423 for chunk in chunks.. 004 0.1234567891.21423 for chunk in chunks nums 12 print chunk produces 1.012345e007 0.123414e 00 4 0.12345678..
Python: simple list merging based on intersections http://stackoverflow.com/questions/9110837/python-simple-list-merging-based-on-intersections large_list_sizes else size random.choice small_list_sizes nums set c for j in xrange size x random.choice list nums lst.append.. nums set c for j in xrange size x random.choice list nums lst.append x nums.remove x random.shuffle lst lists.append lst.. j in xrange size x random.choice list nums lst.append x nums.remove x random.shuffle lst lists.append lst random.shuffle..
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