python:index
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python:index [2012/11/21 07:41] – tkbletsc | python:index [2014/07/19 22:04] – tkbletsc | ||
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Line 11: | Line 11: | ||
< | < | ||
+ | from datetime import datetime | ||
+ | def timestamp(): | ||
+ | |||
def avg(v): return sum(v)/ | def avg(v): return sum(v)/ | ||
def stdev(v): return math.sqrt(sum(x*x for x in v) / len(v) - (avg(v) ** 2)) | def stdev(v): return math.sqrt(sum(x*x for x in v) / len(v) - (avg(v) ** 2)) | ||
def pct_diff(a, | def pct_diff(a, | ||
def product(L): return reduce(lambda x,y: x*y, L, 1) | def product(L): return reduce(lambda x,y: x*y, L, 1) | ||
+ | |||
+ | def ping(host, | ||
+ | ret = subprocess.call([' | ||
+ | return ret==0 | ||
+ | |||
from timeit import Timer | from timeit import Timer | ||
Line 99: | Line 107: | ||
# ... do stuff ... | # ... do stuff ... | ||
throb() | throb() | ||
+ | |||
+ | |||
+ | |||
+ | def recognize_type(v): | ||
+ | if re.match(r' | ||
+ | return int(v) | ||
+ | if re.match(r' | ||
+ | return float(v) | ||
+ | return v | ||
</ | </ | ||
+ | |||
+ | Parse tab-delimited tables, especially pasted from excel: | ||
+ | |||
+ | < | ||
+ | def recognize_type(v): | ||
+ | try: return float(v) | ||
+ | except ValueError: pass | ||
+ | | ||
+ | try: return int(v) | ||
+ | except ValueError: pass | ||
+ | | ||
+ | return v | ||
+ | | ||
+ | def parse_table(table_tsv, | ||
+ | table_rows = table_tsv.strip().split(" | ||
+ | |||
+ | table = {} | ||
+ | |||
+ | col_headers = table_rows[0].split(" | ||
+ | row_headers = [x.split(" | ||
+ | for row_header, | ||
+ | values = row.split(" | ||
+ | table[row_header] = { ' | ||
+ | for (col_header, | ||
+ | if xform: value = xform(value) | ||
+ | table[row_header][col_header] = value | ||
+ | return (row_headers, | ||
+ | |||
+ | |||
+ | engines_tsv = """ | ||
+ | LV-1R Liquid Fuel Engine 650 0.03 4 13.6 220 290 | ||
+ | O-10 MonoPropellant Engine 800 0.09 20 22.7 220 290 | ||
+ | Rockomax 24-77 480 0.09 20 22.7 250 300 | ||
+ | Rockomax Mark 55 Radial Mount Liquid Engine 850 0.9 120 13.6 290 320 | ||
+ | LV-1 Liquid Fuel Engine 350 0.03 4 13.6 220 290 | ||
+ | Rockomax 48-7S 300 0.1 30 30.6 300 350 | ||
+ | LV-T30 Liquid Fuel Engine 850 1.25 215 17.5 320 370 | ||
+ | LV-T45 Liquid Fuel Engine 950 1.5 200 13.6 320 370 | ||
+ | LV-909 Liquid Fuel Engine 750 0.5 50 10.2 300 390 | ||
+ | R.A.P.I.E.R. Engine 3600 1.75 175 10.2 320 360 | ||
+ | Toroidal Aerospike Rocket 3850 1.5 175 11.9 388 390 | ||
+ | Rockomax " | ||
+ | Rockomax " | ||
+ | Rockomax " | ||
+ | LV-N Atomic Rocket Motor 8700 2.25 60 2.7 220 800 | ||
+ | LFB KR-1x2 16400 10 2000 20.4 320 360 | ||
+ | Kerbodyne KR-2L Advanced Engine 20850 6.5 2500 39.2 320 380 | ||
+ | S3 KS-25x4 Engine Cluster 32400 9.75 3200 33.5 320 360 | ||
+ | """ | ||
+ | |||
+ | (engine_names, | ||
+ | |||
+ | |||
+ | |||
+ | </ | ||
+ |
python/index.txt · Last modified: 2014/07/20 17:48 by tkbletsc