I want to know how can i convert (probably) the user input equiv to variable to replace it
i expect when I input slice1 it will print a1 a2 a3 but i found s l i c e 1
how can i fix it
This is code is an exemple
List = [['a1', 'a2', 'a3'], ['b1', 'b2', 'b3']]
slice1 = List[0]
slice2 = List[1]
temp = input("slice number")
for item in temp:
print(i)`
You should use a dictionary.
lists = {"slice1":["a1", "a2", "a3"], "slice2":["b1", "b2", "b3"]}
userInput = input("Enter Slice Number")
varName = "slice"+userInput
print(" ".join(lists[varName]))
slice1 is what is called a key. Keys are immutable items (usually strings, but can be integers or tuples). Each key has a value, for example, slice1 has a value ["a1", "a2", "a3"]. You can access values just like you would in a list, but instead of using the index, you use the key.
So when you want to access ["a1", "a2", "a3"] you do lists["slice1"]. This has the advantage over using globals as you can easily add new keys and change values. Also, it is bad practice to change globals directly.
" ".join(lists["slice1"])
" ".join(list) gets all the items of list and puts them together using the text " " as a separator.
The code I have above ends up doing this
>>>Enter Slice Number1
a1 a2 a3
>>>
So when you enter "1" you get "a1 a2 a3"
I am not sure I completely understood your question.
What about this solution:
List = [['a1', 'a2', 'a3'], ['b1', 'b2', 'b3']]
slice1 = List[0]
slice2 = List[1]
user_input = input("slice number")
if user_input == 'slice1':
for item in slice1:
print item
elif user_input == 'slice2':
for item in slice2:
print item
else:
print "Slice not found :("
Requirements were changed by the OP, here's my solution using a dictionary:
slices_dictionary = {'slice1':['a1', 'a2', 'a3'], 'slice2':['b1', 'b2', 'b3']}
user_input = input("slice number")
def check_slice(user_input):
if user_input in slices_dictionary:
for item in slices_dictionary[user_input]:
print item
else:
print "Sorry but your slice was not found!"
check_slice(user_input)
You can try using globals() to access variables by name
For example:
List = [[a1, a2, a3], [b1, b2, b3]]
slice1 = List[0]
slice2 = List[1]
temp = input("slice number")
slice_list = globals()[temp]
for item in slice_list:
print(item)
List = [[a1, a2, a3], [b1, b2, b3]] slice1 = List[0] slice2 = List[1] temp = input("slice number") slice_list = globals()[temp] for item in slice_list: print(item)
l1 = [['a1', 'a2', 'a3'], ['b1', 'b2', 'b3']]; print(l1[int(input("Enter slice number:"))]). The slice number should be within the list index. Or else it will throw error.