If/else in python list comprehension
up vote
-1
down vote
favorite
I would like to return random word from file, based on passed argument. But if the argument doesn't match anythning I dont want to return anything. My method looks like:
def word_from_score(self,score):
print(random.choices([word for word in self.file if sum([LETTER_SCORES[letter] for letter in word ]) == score]))
It returns the correct word from file based on passed argument in command line, but if the argument doesnt match, i want to return nothing, like ''. How could I add else to this statement?
python list-comprehension
asked Nov 10 at 22:46
Frendom
195
add a comment |
up vote
-1
down vote
favorite
I would like to return random word from file, based on passed argument. But if the argument doesn't match anythning I dont want to return anything. My method looks like:
def word_from_score(self,score):
print(random.choices([word for word in self.file if sum([LETTER_SCORES[letter] for letter in word ]) == score]))
It returns the correct word from file based on passed argument in command line, but if the argument doesnt match, i want to return nothing, like ''. How could I add else to this statement?
python list-comprehension
asked Nov 10 at 22:46
Frendom
195
2
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48
add a comment |
up vote
-1
down vote
favorite
up vote
-1
down vote
favorite
I would like to return random word from file, based on passed argument. But if the argument doesn't match anythning I dont want to return anything. My method looks like:
def word_from_score(self,score):
print(random.choices([word for word in self.file if sum([LETTER_SCORES[letter] for letter in word ]) == score]))
It returns the correct word from file based on passed argument in command line, but if the argument doesnt match, i want to return nothing, like ''. How could I add else to this statement?
python list-comprehension
asked Nov 10 at 22:46
Frendom
195
I would like to return random word from file, based on passed argument. But if the argument doesn't match anythning I dont want to return anything. My method looks like:
def word_from_score(self,score):
print(random.choices([word for word in self.file if sum([LETTER_SCORES[letter] for letter in word ]) == score]))
It returns the correct word from file based on passed argument in command line, but if the argument doesnt match, i want to return nothing, like ''. How could I add else to this statement?
python list-comprehension
python list-comprehension
asked Nov 10 at 22:46
Frendom
195
asked Nov 10 at 22:46
Frendom
195
asked Nov 10 at 22:46
Frendom
195
asked Nov 10 at 22:46
Frendom
195
asked Nov 10 at 22:46
Frendom
195
195
2
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48
add a comment |
2
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48
2
2
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
Should be:
def word_from_score(self,score):
print(random.choices([(word if sum([LETTER_SCORES[letter] for letter in word ]) == score else "") for word in self.file]))
The (... if ... else ...) is actually the ternary operator and not part of the surrounding list comprehension.
answered Nov 10 at 22:50
Michael Butscher
3,91311319
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
Should be:
def word_from_score(self,score):
print(random.choices([(word if sum([LETTER_SCORES[letter] for letter in word ]) == score else "") for word in self.file]))
The (... if ... else ...) is actually the ternary operator and not part of the surrounding list comprehension.
answered Nov 10 at 22:50
Michael Butscher
3,91311319
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
add a comment |
up vote
0
down vote
accepted
Should be:
def word_from_score(self,score):
print(random.choices([(word if sum([LETTER_SCORES[letter] for letter in word ]) == score else "") for word in self.file]))
The (... if ... else ...) is actually the ternary operator and not part of the surrounding list comprehension.
answered Nov 10 at 22:50
Michael Butscher
3,91311319
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
Should be:
def word_from_score(self,score):
print(random.choices([(word if sum([LETTER_SCORES[letter] for letter in word ]) == score else "") for word in self.file]))
The (... if ... else ...) is actually the ternary operator and not part of the surrounding list comprehension.
answered Nov 10 at 22:50
Michael Butscher
3,91311319
Should be:
def word_from_score(self,score):
print(random.choices([(word if sum([LETTER_SCORES[letter] for letter in word ]) == score else "") for word in self.file]))
The (... if ... else ...) is actually the ternary operator and not part of the surrounding list comprehension.
answered Nov 10 at 22:50
Michael Butscher
3,91311319
edited Nov 10 at 22:55
answered Nov 10 at 22:50
Michael Butscher
3,91311319
answered Nov 10 at 22:50
Michael Butscher
3,91311319
answered Nov 10 at 22:50
Michael Butscher
3,91311319
3,91311319
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
add a comment |
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
EDIT: it doesnt work, atm it returns " even if in file is word which sum of letter is passed in argument
– Frendom
Nov 11 at 19:15
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
@Frendom (1) Have you checked that it works with your original function? (2) Can you give a simple example for testing?
– Michael Butscher
Nov 11 at 22:23
add a comment |
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2
Pleae provide a Minimal, Complete, and Verifiable example with sample input and expected output.
– timgeb
Nov 10 at 22:48