i have a python list, using map function is omitting the first zero of the list-CodePudding

I have this code in python, when I print the last line, it is giving an output "11100101100". I'm expecting the output,"011100101100". Notice that the output starts with 1 and not 0. although the variable gamma_sum_list is a list containing 12 digits and its starts with 0. The function somehow deletes the first zero automatically. The following is the exact gamma_sum_list

Input:

[0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0]

Expected Output:

011100101100

Actual Output :

11100101100

def convert(list)
   res = int("".join(map(str,list)))
   return res
print(convert(gamma_sum_list))

enter code here

CodePudding user response：

Your issue is caused by converting the result of the join operation to an integer. Integers do not have leading zeroes. If you remove the int function you'll get a string with the leading zero you're after.

gamma_sum_list = [0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0]

def convert(my_list):
res = "".join(map(str,my_list))
return res

print(convert(gamma_sum_list))

Output:

011100101100

CodePudding user response：

Consider that:

>>> "".join(list(map(str, [0, 1])))
'01'

How would you convert '01' to an integer? Well, its just 1.

>>> int("".join(list(map(str, [0, 1]))))
1

So you probably want to not convert the string to an int, just keep it as a str. If your string is really a number, its probably a binary number.

CodePudding user response：

def convert(some_list):


   res = "".join(map(str,some_list))
   return res

gamma_sum_list = [0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0]


print(convert(gamma_sum_list))

conv = lambda x: ''.join(map(str, x))
print(conv(gamma_sum_list))