defaultsize = 80

def wrapLinesSimple(lineslist, size=defaultsize):
"split at fixed position size"
wraplines = []
for line in lineslist:
while True:
wraplines.append(line[:size]) # OK if len < size
line = line[size:] # split without analysis
if not line: break
return wraplines

def wrapLinesSmart(lineslist, size=defaultsize, delimiters='.,:\t '):
"wrap at first delimiter left of size"
wraplines = []
for line in lineslist:
while True:
if len(line) <= size:
wraplines += [line]
break
else:
for look in range(size-1, size // 2, −1): # 3.0: need // not /
if line[look] in delimiters:
front, line = line[:look+1], line[look+1:]
break
else:
front, line = line[:size], line[size:]
wraplines += [front]
return wraplines

###############################################################################

common use case utilities

###############################################################################

def wrapText1(text, size=defaultsize): # better for line-based txt: mail
"when text read all at once" # keeps original line brks struct
lines = text.split('\n') # split on newlines
lines = wrapLinesSmart(lines, size) # wrap lines on delimiters
return '\n'.join(lines) # put back together

def wrapText2(text, size=defaultsize): # more uniform across lines
"same, but treat as one long line" # but loses original line struct
text = text.replace('\n', ' ') # drop newlines if any
lines = wrapLinesSmart([text], size) # wrap single line on delimiters
return lines # caller puts back together

def wrapText3(text, size=defaultsize):
"same, but put back together"
lines = wrapText2(text, size) # wrap as single long line
return '\n'.join(lines) + '\n' # make one string with newlines

def wrapLines1(lines, size=defaultsize):
"when newline included at end"
lines = [line[:-1] for line in lines] # strip off newlines (or .rstrip)
lines = wrapLinesSmart(lines, size) # wrap on delimiters

PyMailGUI Implementation| 1101