Cow_id_list = []
Herd_Size = int(input("Enter the size of the herd."))
for x in range(Herd_Size):
Cow_id = int("Enter a unique 3 digit ID tag for cow",x+1)
Cow_id_list.append(Cow_id)
print("Initiating yield entry...")
The user inputs an integer (n) which will be stored in variable Herd_Size. How to create a dictionary with the same (n) number of keys and with names of our choice? Name of key value will be ID tags
This is one way.
Cow_id_list = []
Yield_list = []
Herd_Size = int(input("Enter the size of the herd."))
for x in range(Herd_Size):
Cow_id = int(input("Enter a unique 3 digit ID tag for cow"))
Yield = int(input("Enter yield for {0}".format(Cow_id)))
Cow_id_list.append(Cow_id)
Yield_list.append(Yield)
d = dict(zip(Cow_id_list, Yield_list))
Explanation
Cow_id the same way you do for Herd_Size.Yield. Create a Yield_list like Cow_id_list.dict(zip(ids, yields)). zip is used to iterate 2 lists simultaneously by index.dict will create a dictionary from the resulting pairs of values.To improve your logic further, I recommend you consider adding some controls; for instance, to ensure that ids actually consist of 3 digits.
jpp's way is probably better, because you get yield and ID all at once. However, if you want to keep your structure, you can do it like this:
Cow_id_list = []
Herd_Size = int(input("Enter the size of the herd."))
for x in range(Herd_Size):
Cow_id = int(input("Enter a unique 3 digit ID tag for cow"))
Cow_id_list.append(Cow_id)
print("Initiating yield entry...")
d = {}
for i in Cow_id_list:
y = float(input("Enter yielf for cow {}: ".format(i)))
d[i] = y
What is going on here is that you initiate d as an empty dictionary, then iterate through your cow IDs, get the yield one by one, and then add a key for each cow with the corresponding yield as a value to the dictionary d.
not sure why you need to create a dictionary with a specific number of keys. You can just ask the user for input on the ID and yield and put it into the dictionary.
if you have 10 cows, you're not going to have 15 ID's and yields.
def add_cow_info():
add_info = str(input("input cow id and yield?: (y/n)")
if add_info == "y":
return True
elif add_info == "n":
return False
def main():
cow_yield = {}
input_cow = True
while input_cow():
ID = str(input("Enter ID: ")) #if the ID is 001, or 010, the result
# will be 1, 10, respectively.
#Generally keys should be strings anyways.
_yield = int(input("Enter yield: "))
cow_yield[ID] = _yield
return cow_yield
