[英]Try except not catching FileNotFoundError
我正在嘗試捕獲 FileNotFoundError 並在它發生時破壞代碼,但由於某種原因它不起作用,我仍然收到錯誤並且代碼沒有破壞,這是我的代碼
file_name = input("Choose a file: ")
def split_columns(file_name):
x_values = []
y_values = []
try:
with open(file_name) as f:
for line in f:
row_values = line.split()
print(row_values)
x_values.append(float(row_values[0]))
y_values.append(float(row_values[1]))
except FileNotFoundError:
print('This file does not exist, try again!')
raise
return x_values, y_values
我做錯什么了?
從function中取出try/except
,放到調用function的循環中。
def split_columns(file_name):
x_values = []
y_values = []
with open(file_name) as f:
for line in f:
row_values = line.split()
print(row_values)
x_values.append(float(row_values[0]))
y_values.append(float(row_values[1]))
return x_values, y_values
while True:
file_name = input("Choose a file: ")
try:
x_values, y_values = split_columns(file_name)
break
except FileNotFoundError:
print('This file does not exist, try again!')
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