Return to Answer

Added output compressed Python

Source Link

edited Jan 9, 2015 at 6:37

6.8k
1
18
50

Output

def c(a):
 b=[]
 d=[]
 f=[]
 if len(a)<=1:
  return a
 else:
  e=a[0]
  for i in a:
   if i<e:
    b.append(i)
   elif i>e:
    f.append(i)
   else:
    d.append(i)
  b=c(b)
  f=c(f)
  return b+d+f
print c([0,7,3,-1,8,10,57,2])


for i in xrange(1,101):
 if i%15==0:
  print"FizzBuzz"
 elif i%3==0:
  print"Fizz"
 elif i%5==0:
  print"Buzz"
 else:
  print i


from sys import argv
def a(k=1):
 b=(1<<31)-1
 k=k&b
 while 1:
  k=(k*214013+2531011)&b
  yield k>>16
def d(k):
 f=52
 h=range(f-1,-1,-1)
 g=a(k)
 for i,r in zip(range(f),g):
  j=(f-1)-r%(f-i)
  h[i],h[j]=h[j],h[i]
 return h
def m(h):
 l=["A23456789TJQK"[c/4]+"CDHS"[c%4]for c in h]
 for i in range(0,len(h),8):
  print" "," ".join(l[i:i+8])
if __name__=='__main__':
 k=int(argv[1])if len(argv)==2 else 11982
 print"Hand",k
 e=d(k)
 m(e)

Code

Output

def c(a):
 b=[]
 d=[]
 f=[]
 if len(a)<=1:
  return a
 else:
  e=a[0]
  for i in a:
   if i<e:
    b.append(i)
   elif i>e:
    f.append(i)
   else:
    d.append(i)
  b=c(b)
  f=c(f)
  return b+d+f
print c([0,7,3,-1,8,10,57,2])


for i in xrange(1,101):
 if i%15==0:
  print"FizzBuzz"
 elif i%3==0:
  print"Fizz"
 elif i%5==0:
  print"Buzz"
 else:
  print i


from sys import argv
def a(k=1):
 b=(1<<31)-1
 k=k&b
 while 1:
  k=(k*214013+2531011)&b
  yield k>>16
def d(k):
 f=52
 h=range(f-1,-1,-1)
 g=a(k)
 for i,r in zip(range(f),g):
  j=(f-1)-r%(f-i)
  h[i],h[j]=h[j],h[i]
 return h
def m(h):
 l=["A23456789TJQK"[c/4]+"CDHS"[c%4]for c in h]
 for i in range(0,len(h),8):
  print" "," ".join(l[i:i+8])
if __name__=='__main__':
 k=int(argv[1])if len(argv)==2 else 11982
 print"Hand",k
 e=d(k)
 m(e)

Code

Source Link

created Jan 8, 2015 at 16:44

Logic Knight

6.8k
1
18
50

Python 2.7, 794

I have been meaning to build a minifier for Python for a while, so this is a good opportunity to investigate the problem.

The program uses a mix of regular expression analysis, and Python parser operations. White space is minimised. Variable that are defined by the user are replaced by a single letter variable (which is not in use!). Finally the while True statement is put on a diet.

The three test cases all verify as running correctly. I could imagine some pathological examples which could result in errors in the generated code but the algorithm should be robust under most circumstances.

Results

228 t1.py
128 t2.py
438 t3.py
794 total

Code

import sys
import re
from tokenize import generate_tokens
from token import tok_name
from keyword import iskeyword

wr = sys.stdout.write

def pyparse(text):
    'Return [TYPE,TOKEN] pair list'
    # Use KEYWORD,NAME,NUMBER,OP,STRING,NL,NEWLINE,COMMENT,INDENT,DEDENT
    rawtokens = generate_tokens(text.readline)
    tokens = [[tok_name[n], t] for n,t,p1,p2,dx in rawtokens]
    for tpair in tokens:
        if tpair[0] == 'NAME' and iskeyword(tpair[1]):
            tpair[0] = 'KEYWORD'
    return tokens

def finduservars(filename):
    'Return a set of user variables that we can replace with a-zA-Z'
    varset = set()
    for line in open(filename):
        line = line.strip()
        match = re.match(r'def\s+(\w+)\s*\((.*)\)\s*:', line)
        if match:
            func, args = match.groups()
            varset.add(func)
            arglist = re.findall(r'(\w+|=)', args)
            for a in arglist:
                if a == '=':
                    break  # keyword args follow - too hard to parse
                varset.add(a)
            continue
        match = re.match(r'(\w+)\s*=.+', line)
        if match:
            assigned = match.group(1)
            varset.add(assigned)
            continue
    return set(v for v in list(varset) if len(v) > 1)

filename = sys.argv[1]
tokenlist = pyparse(open(filename))

# Build map for var->char conversion:
varset = finduservars(filename)
singles = [text for tok,text in tokenlist if tok=='NAME' and len(text)==1]
allvar = [chr(n) for n in range(97,123)+range(65,91)]
charvar = [c for c in allvar if c not in singles]
varreplaced = list(varset)[:len(charvar)]
varmap = dict((v, charvar.pop(0)) for v in varreplaced)

prev = 'NONE'
indent = ['']
output = []
add = output.append
for tok, text in tokenlist:
    if tok == 'NL':
        continue
    elif tok == 'INDENT':
        indent.append( text.replace('    ', ' ') )
        output[-1] = indent[-1]
    elif tok == 'DEDENT':
        indent.pop(-1)
        output[-1] = indent[-1]
    elif tok == 'NEWLINE':
        add(text)
        add(indent[-1])
    elif tok in 'KEYWORD,NAME,NUMBER':
        if prev in 'KEYWORD,NAME,NUMBER':
            add(' ')
        if tok == 'NAME':
            if output[-2] == 'while' and text == 'True':
                add('1') # common verbose idiom
            else:
                add(varmap.get(text, text))
        else:
            add(text)
    else:
        add(text)
    prev = tok

wr(''.join(output))