mots réservés » utilisés par le langage lui-même (if, elif, while, for, else, print,...).
* Instruct... cs.python.org/3/reference/compound_stmts.html#the-if-statement|documentation officielle]] ou [[http://... ou "faux" (false). Exemple :
<code python>
a = 0
if a > 0 :
print("a est positif")
print("car... " sous-tend une condition alternative. un simple "if" correspond à une expression conditionnelle.
*
44/can-an-atom-have-more-than-8-valence-electrons-if-not-why-is-8-the-limit|Can an atom have more than 8 valence electrons? If not, why is 8 the limit ?]]
* [[http://chemistr... tackexchange.com/questions/6751/how-does-one-tell-if-a-specific-molecule-is-acidic-or-basic|How does one tell if a specific molecule is acidic or basic?]]
* [[h
'
intag = [False]
def chk(c):
if intag[0]:
intag[0] = (c != '>')
... return True
return ''.join(c for c in s if chk(c))
def find_words(text, search):
''' Se... /stackoverflow.com/questions/5319922/python-check-if-word-is-in-a-string
'''
dText = {}
dS... :
for search_word in dSearch:
if hash(search_word) == hash(text_word):
fit from quite different types of instruction]].
If you ask a history student to read a source docume... e cues.
===== 2. You understand concepts better if you discover them for yourself =====
I recently ... imminent. Do I now understand toilets better than if a plumber had been alongside me, explaining exact... a-cognition is a short-cut to expertise =====
So if simply imitating the behaviour of an expert will
ple are not informed; how can you have an opinion if you are not informed? If everybody always lies to you, the consequence is not that you believe the li... web, exemples,... :
* [[https://www.poynter.org/ifcn/|Poynter]], The International Fact-Checking Network
* [[https://ifcncodeofprinciples.poynter.org/|International Fact
lect an Ubuntu image when flashing your SD card. If you are on Ubuntu, run: <code>sudo snap install r... n the directory
for FILE in "$DIR"/*
do
# Check if the file is older than 8 days
if [[ -f "$FILE" && $(date -r "$FILE" +%s) -lt $CUTOFF ]]
then
# Check if the file's date is the first day of the month
Rep=[]
for i in range(Mlin):
if i!=m:
for j in range(Mlin):
if j!=n:
result.append... " retourne le déterminat de la matrice A"
if len(A)==1:
return A[0][0]
else:... rime 1ere ligne et colonne de A
if j%2==0: #(-1)^(i+j) * Det("matrice où on retire 1
(n):
for x in range(2,int(n**0.5)+1):
if n % x == 0:
return False
return T... f primelist(n):
return [a for a in range(2,n) if isprime(a)]
p=primelist(1000)
print(p)
</code>
... :
ncur += 1
return [a for a in li if a != 0] # renvoie une liste avec les élements no... com/software-development/python/code/216880/check-if-a-number-is-a-prime-number-python]]
* [[http://
source of this page by pressing "Edit this page". If you want to try something, just use the [[playgro... ll.
**Paragraphs** are created from blank lines. If you want to **force a newline** without a paragra... without it.
You should use forced newlines only if really needed.
===== Links =====
DokuWiki suppo... can be enabled in the [[doku>config]] file. Hint: If DokuWiki is a link, then it's enabled.
* When a
A living cell dies
of overcrowding or loneliness if it has more than three or fewer than
two neighbours; a dead cell is brought to life if it has exactly three
neighbours (determined in Ce... will be alive at the next iteration."""
if self.state==Cell.LIVE and \
(numNeigh... ,newstate):
self.state = newstate
if self.state==Cell.LIVE:
self["bg"] = "
= []
for color, A, B, C in triangles:
if color == 0:
# Subdiviser des petits t... tourne cet entier"""
split = s.split(" ")
if len(split) == 2:
a = convert_to_positive_... b = convert_to_positive_int(split[1])
if a != None and b != None:
return (a, b... haine s est un entier, retourne cet entier"""
if s.isdigit() and long(s) > 0:
return l
sv #Importe le module pour lire une liste externe
ifile = open("Bibliotheque.csv", "rb") #ouvre le fichier .csv
reader = csv.reader (ifile, delimiter= ';') #lit le fichier .csv
precip... été mise pour permettre au programme de continuer
if ka3 ==0:
precipites[p].pop() #la valeur 0 pos... divise par les ka, On la retire donc de la liste
if ka2 ==0:
precipites[p].pop() #idem
if ka1
ndice n de la suite de Fibonacci
"""
...
if __name__ == '__main__':
# le programme "princ...
Le rôle de la structure conditionnelle **<nowiki>if __name__ == '__main__':</nowiki>** est de n'exécu... la suite de Fibonacci
"""
a, b = 0, 1
if n == 0:
return a
elif n == 1:
... range(1,n):
a, b = b, a + b
return b
if __name__ == '__main__':
i = int(input("Suite
ser (valeur 0)
pH = 0. #pH de départ
if n==3:
Ka1=10**(-pKa1)
Ka2=10**(-p... ra le champs ou l'on donnera le pKa1
if n > 1 : #paramètre demander si la m... e champs ou l'on donnera le pKa2
if n == 3 : #paramètre demander si la ... .get())
pKa2 = 0
pKa3 = 0
if n > 1:
pKa2 = float (champ2.get())
nelle ====
Instruction d’exécution conditionnelle if...elif...else (si...sinon-si...autrement)
* Commence par **if expression** :
* Si l’expression est vraie, le ... code python>
a = int(input('Donnez une note ? '))
if a >= 18:
print("Excellent")
elif a >= 16:
... , dt, flag
x1, y1 = x1 +vx*dt, y1 + vy*dt
if x1 < 0 or x1 > 220:
vx=-vx
if y1 < 0