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Fix camelcase_to_underscore. Closes #767.

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This commit is contained in:
Steve Pulec 2017-03-15 23:39:36 -04:00
commit 25e2af0320
6 changed files with 28 additions and 72 deletions
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16
moto/core/utils.py
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@ -12,10 +12,18 @@ def camelcase_to_underscores(argument):
python underscore variable like the_new_attribute'''
result = ''
prev_char_title = True
for char in argument:
if char.istitle() and not prev_char_title:
# Only add underscore if char is capital, not first letter, and prev
# char wasn't capital
for index, char in enumerate(argument):
try:
next_char_title = argument[index + 1].istitle()
except IndexError:
next_char_title = True
upper_to_lower = char.istitle() and not next_char_title
lower_to_upper = char.istitle() and not prev_char_title
if index and (upper_to_lower or lower_to_upper):
# Only add underscore if char is capital, not first letter, and next
# char is not capital
result += "_"
prev_char_title = char.istitle()
if not char.isspace(): # Only add non-whitespace