File: ecrit_2006.tex, line 28
l = [ 0,1,2,3,4,6,5,8,9,10]
res = True
for i in range (1,len (l)) :
if l[i-1] > l[i] :
res = False
File: ecrit_2006.tex, line 58
def somme (n) :
return sum ( [ int (c) for c in str (n) ] )
File: ecrit_2006.tex, line 66
def somme (n) :
l = str (n) # il ne faut pas confondre l=str (n) avec l = "n"
s = 0
for c in l : # ou for i in range (0, len (c)) :
s += int (c) # ou s += int (c [i])
return s
File: ecrit_2006.tex, line 78
def somme (n) :
s = 0
while n > 0 :
s += n % 10
n /= 10 # ici, c'est une division entière, si vous n'êtes pas sûr :
# n = int (n/10)
return n
File: ecrit_2006.tex, line 91
def somme (n) :
if n <= 0 : return 0
else : return (n % 10) + somme ( n / 10 )
File: ecrit_2006.tex, line 100
import math
def somme (n) :
k = int (math.log (n) / math.log (10) + 1)
s = 0
for i in range (1,k+1) :
d = 10 ** i # ou encore d = int (exp ( k * log (10) ) )
c = n / d
e = n - c * d
f = e / (d / 10)
s += f
return s
File: ecrit_2006.tex, line 128
n = 0
for i in range (0,10) :
if (n + i) % 3 == 0 :
n += 1
File: ecrit_2006.tex, line 177
def grenouille (n) :
if n == 2 : return 2
elif n == 1 : return 1
else : return grenouille (n-1) + grenouille (n-2)
print grenouille (13)
File: ecrit_2006.tex, line 191
def grenouille (fin, n = 2, u1 = 1, u2 = 2) :
if fin == 1 : return u1
elif fin == 2 : return u2
elif n == fin : return u2
u = u1 + u2
return grenouille (fin, n+1, u2, u)
print grenouille (13)
File: ecrit_2006.tex, line 205
def grenouille (n) :
if n == 1 : return 1
u1 = 1
u2 = 2
for i in range (3,n+1) :
u = u1 + u2 # il est impossible de
u1 = u2 # résumer ces trois lignes
u2 = u # en deux
return u2
print grenouille (13)
File: ecrit_2006.tex, line 222
def grenouille (n) :
if n == 1 : return 1
u = [1,2]
for i in range (2,n) :
u.append (u [i-1] + u [i-2])
return u [n-1]
print grenouille (12)
File: ecrit_2006.tex, line 236
def grenouille (n) :
if n == 1 : return 1
u = range (0, n) # il ne faut pas oublier de créer le tableau
# avec autant de cases que nécessaire
# ici 13
u [0] = 1
u [1] = 2
for i in range (2,n) :
u [i] = u [i-1] + u [i-2]
return u [n-1]
print grenouille (12)
File: ecrit_2006.tex, line 261
a = "abcdefghijklmnopqrstuvwxyz"
print len (a)
d = {}
for i in range (0,len (a)) :
d [ a [ i ] ] = i
print d ["M"]
File: ecrit_2006.tex, line 274
examen.py:14: KeyError: 'M'
File: ecrit_2006.tex, line 288
a = "abcdefghijklmnopqrstuvwxyz"
print len (a)
d = {}
for i in range (0,len (a)) :
d [ a [ i ] ] = i
print d ["m"] ###### ligne modifiée
File: ecrit_2006.tex, line 301
a = "abcdefghijklmnopqrstuvwxyz"
a = a.upper () ####### ligne ajoutée
print len (a)
d = {}
for i in range (0,len (a)) :
d [ a [ i ] ] = i
print d ["M"]
File: ecrit_2006.tex, line 324
def somme (tab) :
l = tab[0]
for i in range (1, len (tab)) :
l += tab [i]
return l
ens = [[0,1],[2,3]]
print somme ( ens ) # affiche [0,1,2,3]
print ens # affiche [ [0,1,2,3], [2,3] ]
File: ecrit_2006.tex, line 345
import copy ###### ligne ajoutée
def somme (tab) :
l = copy.copy (tab[0]) ###### ligne modifiée
for i in range (1, len (tab)) :
l += tab [i]
return l
ens = [[0,1],[2,3]]
print somme ( ens ) # affiche [0,1,2,3]
print ens # affiche [ [0,1,2,3], [2,3] ]
File: ecrit_2006.tex, line 360
def somme (tab) :
l = [] ###### ligne modifiée
for i in range (0, len (tab)) : ###### ligne modifiée
l += tab [i]
return l
ens = [[0,1],[2,3]]
print somme ( ens ) # affiche [0,1,2,3]
print ens # affiche [ [0,1,2,3], [2,3] ]
File: ecrit_2006.tex, line 382
li = range (0,10)
sup = [0,9]
for i in sup :
del li [i]
print li
File: ecrit_2006.tex, line 393
examen.py:44: IndexError: list assignment index out of range
File: ecrit_2006.tex, line 406
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
File: ecrit_2006.tex, line 410
[ 1, 2, 3, 4, 5, 6, 7, 8, 9]
File: ecrit_2006.tex, line 416
li = range (0,10)
sup = [9,0] ####### ligne modifiée
for i in sup :
del li [i]
print li
File: ecrit_2006.tex, line 439
l = ["un", "deux", "trois", "quatre", "cinq"]
for i in range (0,len (l)) :
mi = i
for j in range (i, len (l)) :
if l[mi] < l [j] : mi = j
e = l [i]
l [mi] = l [i]
l [i] = e
print l
File: ecrit_2006.tex, line 455
['un', 'deux', 'deux', 'deux', 'cinq']
File: ecrit_2006.tex, line 470
l = ["un", "deux", "trois", "quatre", "cinq"]
for i in range (0,len (l)) :
mi = i
for j in range (i, len (l)) :
if l[mi] < l [j] : mi = j
e = l [mi] ######## ligne modifiée
l [mi] = l [i]
l [i] = e
print l
File: ecrit_2006.tex, line 499
def moyenne (tab) :
s = 0.0
for x in tab :
s += x
return s / len (tab)
def variance (tab) :
s = 0.0
for x in tab :
t = x - moyenne (tab)
s += t * t
return s / len (tab)
l = [ 0,1,2, 2,3,1,3,0]
print moyenne (l)
print variance (l)
File: ecrit_2006.tex, line 529
def variance (tab) :
s = 0.0
m = moyenne (tab)
for x in tab :
t = x - m
s += t * t
return s / len (tab)
File: ecrit_2006.tex, line 563
class carre :
def __init__ (self, a) :
self.a = a
def surface (self) :
return self.a ** 2
class rectangle (carre) :
def __init__ (self, a,b) :
carre.__init__(self,a)
self.b = b
def surface (self) :
return self.a * self.b
File: ecrit_2006.tex, line 582
class rectangle :
def __init__ (self, a,b) :
self.a = a
self.b = b
def surface (self) :
return self.a * self.b
class carre (rectangle) :
def __init__ (self, a) :
rectangle.__init__ (self, a,a)
def surface (self) :
return self.a ** 2
File: ecrit_2006.tex, line 616
class carre :
def __init__ (self, a) :
self.a = a
def surface (self) :
return self.a ** 2
class rectangle (carre) :
def __init__ (self, a,b) :
carre.__init__(self,a)
self.b = b
def surface (self) :
return self.a * self.b
class losange (carre) :
def __init__ (self, a,theta) :
carre.__init__(self,a)
self.theta = theta
def surface (self) :
return self.a * math.cos (self.theta) * self.a * math.sin (self.theta) * 2
File: ecrit_2006.tex, line 654
x = 1.0
for i in range (0,15) :
x = x / 10
print i, "\t", 1.0 - x, "\t", x, "\t", x **(0.5)
File: ecrit_2006.tex, line 664
0 0.90000000000000002220 0.1 0.316227766017 1 0.98999999999999999112 0.01 0.1 2 0.99899999999999999911 0.001 0.0316227766017 3 0.99990000000000001101 0.0001 0.01 4 0.99999000000000004551 1e-05 0.00316227766017 5 0.99999899999999997124 1e-06 0.001 6 0.99999990000000005264 1e-07 0.000316227766017 7 0.99999998999999994975 1e-08 0.0001 8 0.99999999900000002828 1e-09 3.16227766017e-05 9 0.99999999989999999173 1e-10 1e-05 10 0.99999999998999999917 1e-11 3.16227766017e-06 11 0.99999999999900002212 1e-12 1e-06 12 0.99999999999989996891 1e-13 3.16227766017e-07 13 0.99999999999999000799 1e-14 1e-07 14 0.99999999999999900080 1e-15 3.16227766017e-08 15 0.99999999999999988898 1e-16 1e-08 16 1.00000000000000000000 1e-17 3.16227766017e-09 17 1.00000000000000000000 1e-18 1e-09 18 1.00000000000000000000 1e-19 3.16227766017e-10 19 1.00000000000000000000 1e-20 1e-10
File: ecrit_2006.tex, line 691
class matrice_carree_2 :
def __init__ (self, a,b,c,d) :
self.a, self.b, self.c, self.d = a,b,c,d
def determinant (self) :
return self.a * self.d - self.b * self.c
m1 = matrice_carree_2 (1.0,1e-6,1e-6,1.0)
m2 = matrice_carree_2 (1.0,1e-9,1e-9,1.0)
print m1.determinant ()
print m2.determinant ()
File: ecrit_2006.tex, line 729
def valeurs_propres (self) :
det = self.determinant ()
trace = self.a + self.d
delta = trace ** 2 - 4 * det
l1 = 0.5 * (trace - (delta ** (0.5)) )
l2 = 0.5 * (trace + (delta ** (0.5)) )
return l1,l2
File: ecrit_2006.tex, line 768
0.99999999999900002212 1.00000000000000000000
File: ecrit_2006.tex, line 777
l1 = 0.5 * (trace - ((trace ** 2 - 4 * det) ** (0.5)) ) l2 = 0.5 * (trace + ((trace ** 2 - 4 * det) ** (0.5)) )
File: ecrit_2006.tex, line 785
l1 = 1,000001 l2 = 0.99999899999999997124 # égale à 1 - 1e-6
File: ecrit_2006.tex, line 793
l1 = 1 l2 = 1
File: ecrit_2006.tex, line 801
l1 = 0.5 * (trace - ((trace ** 2 - 4 * det) ** (0.5)) ) = - det ** 0.5 = -1e-9 l2 = 0.5 * (trace + ((trace ** 2 - 4 * det) ** (0.5)) ) = det ** 0.5 = 1e-9
File: ecrit_2006.tex, line 809
l1 = 1-1e-9 = 0.99999999900000002828 l2 = 1+ 1e-9 = 1.000000001