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+--- Thread: snippet: dp and pv (/thread-2764.html)
snippet: dp and pv - Skaperen - Apr-08-2017
i have this saved as dppv,py ready to insert into projects where i need this level of debugging. the dp() function is just like print except that if environment variable nodebug (lower case) is set it becomes quiet and its different name makes it easier to hunt them down to remove them when you are done with them. the value of the nodebug environment variable is to get q quick look at the output without the dp() output. the pv() is to show a variable. it will output both the name and value given only the name (string) as well as indicating if the variable is local or global. if it is not assigned, it will say the.
def dp(*msg,**opt):
"""Print for debugging.
function dp
purpose print for debugging.
note if environment variable 'nodebug' is set then no printing
will happen.
"""
from os import environ
if 'nodebug' in environ:
return 0
if 'file' not in opt:
from sys import stderr as default_file
opt['file']=default_file
try:
rc=print(*msg,**opt)
opt['file'].flush()
except BrokenPipeError:
pass
return rc
def pv(*names,**opt):
"""Print a variable name and value.
function pv
purpose print a variable name and value.
arguments each a string of the variable name to print
note begin the string with '#' to skip this variable
note begin the string with '=' to print what follows
"""
from inspect import currentframe
if 'file' not in opt:
from sys import stderr as default_file
opt['file']=default_file
for x in names:
if not isinstance(x,(list,tuple)):
x=[x]
for name in x:
name=str(name)
if name[0]=='#':
continue
if name[0]=='=':
print('===',name[1:])
l=currentframe().f_back.f_locals
g=currentframe().f_back.f_globals
try:
if name in l:
print('... local var:',str(name),'=',repr(l[name]),**opt)
elif name in g:
print('.. global var:',str(name),'=',repr(g[name]),**opt)
else:
print('............. ',str(name),'not assigned',**opt)
opt['file'].flush()
except BrokenPipeError:
return
return