fixes

week3/lib/prime.py

@@ -3,8 +3,6 @@ def primes(kmax):
         kmax = 100000
     k = 0
     n = 2
-    j = 0
-    result = [0] * kmax
     p = [0] * kmax
     while k < kmax:
         i = 0
@@ -13,6 +11,5 @@ def primes(kmax):
         if i == k:
             p[k] = n
             k = k + 1
-            result[j] = n; j = j + 1
         n = n + 1
-    return result
+    return p

week3/lib/pyxprime.pyx

@@ -1,7 +1,6 @@
 def primes(int kmax):
     cdef int n, k, i
     cdef int p[100000]
-    result = []
     if kmax > 100000:
         kmax = 100000
     k = 0
@@ -13,6 +12,5 @@ def primes(int kmax):
         if i == k:
             p[k] = n
             k = k + 1
-            result.append(n)
         n = n + 1
-    return result
+    return [p[i] for i in range(kmax)]

week3/lib/test.sh

@@ -2,25 +2,25 @@
 
 export LD_LIBRARY_PATH=`pwd`
 
-echo testlibprime
+echo -e "\ntestlibprime"
 time $(./testlibprime >/dev/null)
 
-echo pyxlibprime
+echo -e "\npyxlibprime"
 time $(python -c 'import pyxlibprime; pyxlibprime.Prime(2000)._print()' > /dev/null)
 
-echo ctlibprime
+echo -e "\nctlibprime"
 time $(python -c 'import ctlibprime; ctlibprime.Prime(2000)._print()' > /dev/null)
 
-echo pyxprime
+echo -e "\npyxprime"
 time $(python -c 'import pyxprime; print pyxprime.primes(2000)' > /dev/null)
 
-#echo pyxnpprime
+#echo -e "\npyxnpprime"
 #time $(python -c 'import pyxnpprime; print pyxnpprime.primes(2000)' > /dev/null)
 
-echo pyprime
+echo -e "\npyprime"
 time $(python -c 'import pyprime; print pyprime.primes(2000)' > /dev/null)
 
-echo prime
+echo -e "\nprime"
 time $(python -c 'import prime; print prime.primes(2000)' > /dev/null)
 
 

week3/presentation.pin

@@ -11,12 +11,11 @@ Interfacing with Native code from Python
 -- [black] [text-color=white] [font=Sans 40px] [shading-color=black] [shading-opacity=0.66]
 Why
 
- ✔ speeding up hot loops
  ✔ speeding up hot loops	
  ✔ interfacing with native libraries
  ✔ improving performance in multi-threaded applications
  ✔ interfacing with other computational environments
- ✔ flexible data structures
+ ✔ enjoying segfaults
 
 -- [slide-contents-exec=source-highlight -s c -i lib/libprime.h -o STDOUT --outlang-def=./pango.outlang]