0
Mon codePEP234 iter, sortie écran inattendu
import sys
f=open('iter.txt')
for chunk in iter(lambda: f.read(20), ''):
n = sys.stdout.write(chunk)
print(n)
écran
Iteration is one of 20
Python’s strongest f20
eatures. At a high l20
evel, you might simp20
ly view
iteration as20
a way to process it20
ems in a sequence. H20
owever, there is so 20
much more that
is po20
ssible, such as crea20
ting your own iterat20
or objects,
12
Je pensais morceau à imprimer sans ce numérique value.How il vient qu'il apparaît? J'ai trouvé ce
iter(callable, sentinel)
This form creates an iterator out of any callable, and will stop when an exception is raised or the sentinel value is returned by the callable.
Quelle est la valeur sentinelle?
Explicitement fait 'print (n)' - Wonders pourquoi il est fait. –
J'utilise Python3. – MishaVacic