41 lines
1 KiB
Python
41 lines
1 KiB
Python
import sys
|
|
|
|
########################################################################
|
|
# Stopping criterions
|
|
########################################################################
|
|
|
|
def max(i, val, sol, nb_it):
|
|
if i < nb_it:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
|
|
# Stopping criterions that are actually just checkpoints.
|
|
|
|
def several(i, val, sol, agains):
|
|
"""several several stopping criterions in one."""
|
|
over = []
|
|
for again in agains:
|
|
over.append( again(i, val, sol) )
|
|
return all(over)
|
|
|
|
|
|
def save(i, val, sol, filename="run.csv", fmt="{it} ; {val} ; {sol}\n"):
|
|
"""Save all iterations to a file."""
|
|
# Append a line at the end of the file.
|
|
with open(filename.format(it=i), 'a') as fd:
|
|
fd.write( fmt.format(it=i, val=val, sol=sol) )
|
|
return True # No incidence on termination.
|
|
|
|
|
|
def history(i, val, sol, history):
|
|
history.append((val,sol))
|
|
return True
|
|
|
|
|
|
def log(i, val, sol, fmt="{it} {val}\n"):
|
|
"""Print progress on stderr."""
|
|
sys.stderr.write( fmt.format(it=i, val=val) )
|
|
return True
|
|
|