Message377456
I modeled the new entry on the previous one. The code and its test.
def fr(n, remove):
mylist = list(range(n))
for i in range(len(mylist)-1, -1, -1):
if remove(mylist[i]):
del mylist[i]
return mylist
def ff(n, keep):
mylist = list(range(n))
j = 0
for i, item in enumerate(mylist):
if keep(item):
mylist[j] = item
j += 1
del mylist[j:]
return mylist
for i in range(9):
expect = list(range(0, i, 2))
def remove(n): return n % 2
def keep(n): return n % 2 == 0
print(fr(i, remove) == ff(i, keep) == expect)
expect = list(range(i//2))
def remove(n): return n >= i//2
def keep(n): return n < i//2
print(fr(i, remove) == ff(i, keep) == expect)
expect = list(range(i//2, i))
def remove(n): return n < i//2
def keep(n): return n >= i//2
print(fr(i, remove) == ff(i, keep) == expect)
# all True |
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Date |
User |
Action |
Args |
2020-09-24 20:02:12 | terry.reedy | set | recipients:
+ terry.reedy, paul.moore, eric.smith, steven.daprano, sreedevi.ha |
2020-09-24 20:02:12 | terry.reedy | set | messageid: <1600977732.31.0.809523173572.issue41774@roundup.psfhosted.org> |
2020-09-24 20:02:12 | terry.reedy | link | issue41774 messages |
2020-09-24 20:02:12 | terry.reedy | create | |
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