This function is to evaluate the stuff inside a list. In my case the specific situation was that I had a list like this mylist=[“10″,”+”,”20″,”-“,”20″,”+”,”20″,”-“,”20”] and I want to get a return 10. ie., ((((10+20)-20)+20)-20)=10
def sum_of_all_values(list):
value_in_mem=0
iter_i=0#current iteration
for i in list:
iter_i+=1
index_of_i=iter_i-1
check_value=i.isnumeric()
if check_value:
if i == list[0]:
value_in_mem=int(i)
elif i== list[-1]:
value_in_mem=value_in_mem
else:
if i == "+":
x=int(list[index_of_i-1])
y=int(list[index_of_i+1])
if x == list[0]:
value_in_mem=x+y
else:
value_in_mem=value_in_mem+y
if i == "-":
x=int(list[index_of_i-1])
y=int(list[index_of_i+1])
if x == list[0]:
value_in_mem=x-y
else:
value_in_mem=value_in_mem-y
if i == "*":
x=int(list[index_of_i-1])
y=int(list[index_of_i+1])
if x == list[0]:
value_in_mem=x*y
else:
value_in_mem=value_in_mem*y
if i == "/":
x=int(list[index_of_i-1])
y=int(list[index_of_i+1])
if x == list[0]:
value_in_mem=x/y
else:
value_in_mem=value_in_mem/y
return value_in_mem
the above function takes in a list and return the calculated value.
example:
print(sum_of_all_values(mylist))
Diary of a sysadmin 