Как да се определи грешката стойности в python
Примерен код
как да се определи грешката стойности в python
def example():
i = 0
resultlist_key = []
result_list = list()
a_list = list()
b_list = list()
a_list.append(feature_matrix_ip)# feature_matrix_ip contains features of the query image
while i < 70:
b_list.append(feature_matrix_db[i])# feature_matrix_db contains features of img. in DB
dist = distance.euclidean(a_list,b_list[i])
result_list.append(dist)
resultlist_key = OrderedDict(sorted(enumerate(result_list),key=lambda x: x[0])).keys()
i = i + 1
res_lst_srt = {'values': result_list,'keys':resultlist_key}
res_lst_srt['values'], res_lst_srt['keys'] = zip(*sorted(zip(res_lst_srt['values'], res_lst_srt['keys'])))# sorting according to the least distance and the key will not change
key = res_lst_srt['keys']
как да се определи грешката valueerror в python
#Instead of
a = int(input("What is x?"))
#Put
try:
a = int(input("What is x?"))
except ValueError:
print ("Insert ValueError message here")
#This way your program won't crashкак да се определи грешката на value в python
filename = "language.txt"
#open file for writing
fileHandler = open (filename, "w")
#Add some text
fileHandler.write("Bash\n")
fileHandler.write("Python\n")
fileHandler.write("PHP\n")
#close the file
fileHandler.close()
#open file the file and read the data
filehandler = open(filename, "r")
#Read the file by line
for line in fileHandler:
print(line)
#close the file
fileHandler.close()
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