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Clear solution in Clear category for Right to Left by Sebastian.M
def left_join(phrases):
str=''
counter = 0
for x in phrases:
counter+=1
if 'right' in x:
y=x.replace('right','left')
str+=y
else:
str+=x
if counter < len(phrases):
str+=','
return str
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert left_join(("left", "right", "left", "stop")) == "left,left,left,stop", "All to left"
assert left_join(("bright aright", "ok")) == "bleft aleft,ok", "Bright Left"
assert left_join(("brightness wright",)) == "bleftness wleft", "One phrase"
assert left_join(("enough", "jokes")) == "enough,jokes", "Nothing to replace"
Nov. 4, 2016