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Added error handling to file reading; fixes #3 #34

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Added error handling to file reading; fixes #3 #34

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29 changes: 17 additions & 12 deletions caduceus/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,20 +15,25 @@ def build_snakes(common_file, sci_file):
Returns: an unsorted list of Snake items
'''
snakes = []
# that above may be the docstring?

with open(common_file, 'rb') as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
s = Snake(0, 0, row["common name"], row["scientific name"])
snakes.append(s)
try:
with open(common_file, 'rb') as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
s = Snake(0, 0, row["common name"], row["scientific name"])
snakes.append(s)

for snake in snakes:
with open(sci_file, 'rb') as csvfile2:
reader2 = csv.DictReader(csvfile2)
for row in reader2:
if snake.sci_name == row['scientific name']:
snake.weight = int(row["weight"])
snake.length = int(row['length'])
for snake in snakes:
with open(sci_file, 'rb') as csvfile2:
reader2 = csv.DictReader(csvfile2)
for row in reader2:
if snake.sci_name == row['scientific name']:
snake.weight = int(row["weight"])
snake.length = int(row['length'])

except: #I don't know what sort of error it would be
print "Cadeceus expects specific columns in csv files to work. See help(build_snakes)."

return snakes

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