How can I access the strings of 'X'
list = [['X','Y','Z'], ['X','Z','Y']]
For example I want to define a function to return True if list[1] of both list is equal to 'X'
2 Answers
You can use all to see if all ith elements in each sublist are the same:
def is_equal(l, i):
first = l[0][i]
return all(sub[i] == first for sub in l)
You might want to catch an IndexError in case i is outside the bounds of and sublist:
def is_equal(l, i):
try:
first = l[0][i]
return all(sub[i] == first for sub in l)
except IndexError:
return False
If you want to explicitly pass a value to check:
def is_equal(l, i, x):
try:
return all(sub[i] == x for sub in l)
except IndexError:
return False
answered Aug 26, 2015 at 9:42
Padraic Cunningham
181k30 gold badges264 silver badges327 bronze badges
1 Comment
Padraic Cunningham
@Eric, no worries, you may want to let a user know if
i was outside the bounds of any sublistdef check_list(list):
for a in list:
if a == "X"
return True
return False
def check_list_list(list):
try:
return check_list(list[1])
except IndexError:
return False
all('X' in x[0] for x in your_list)all('X' in x[0] for x in your_list)is wrong,"X" in "FOO X"is True