How will I check and append only if both elements are true in python?-CodePudding

#I want to append the tuple, only if both the elements are two-digit. I have tried to use all function, but ended up with many errors. Please help me to get the desired output

print("The original list is : "   str(test_list))

K = 2
res=[]


for sub in test_list:
    for ele in sub:
        if len(str(ele))==K:
            res.append(sub)
print("The Extracted tuples : "   str(tuple(res)))

#Output that I want enter image description here

#As you can see the output that I want, help to write the proper code for that, Thanks in Advance

CodePudding user response：

You can use the else statement of a for loop. it is useful to check for the condition that is not met:

original_list = [(54, 2), (34,55), (222,23), (12,45), (78,)]
# append tuples if both values have 2 digits
new_list = []
for item in original_list:
    for i in item:
        if len(str(i)) != 2:
            break
    else:
        new_list.append(item)
print(new_list)
#[(34, 55), (12, 45), (78,)]

CodePudding user response：

you probably have some issues with question format, read up on markdown please. Plus, this question is rather specific and doesn't really help others if they read this page, so i think stackoverflow people don't really like this.

Anyways, in your code, you are checking if either of the element is 2 digits, then append. But, the problemt requirement askes you to check both elements of the tuple.

for item1, item2 in test_list: #foreach item in list, grab first and second item
    if len(str(item1)) == 2 and len(str(item2)) == 2: 
        #append to result iff both items have length of 2
        res.append((item1, item2))

CodePudding user response：

You want to include the tuple in the final list if all the elements of the tuple are two-digit; your loop will append the tuple once for each element that is two-digit.

This will do what you're looking for:

print("The original list is :", test_list)
print("The extracted tuples :", [t for t in test_list if all(9 < i < 100 for i in t)])