Removed explicit cast to str

Author: tanay-man

integration_tests/loop_11.py

@@ -6,36 +6,37 @@
 for i in [1, 2, 3, 4]:
     print(i)
     sum += i
-print("sum = "+str(sum))
+print("sum = ",sum)
 assert sum == 10
 
 alphabets: str = ""
 c: str
 for c in "abcde":
     print(c)
     alphabets += c
-print("alphabets = "+alphabets)
+print("alphabets = ",alphabets)
 assert alphabets == "abcde"
 
 alphabets = ""
 s : str = "abcde"
 for c in s[1:4]:
+    print(c)
     alphabets += c
-print("alphabets = "+alphabets)
+print("alphabets = ",alphabets)
 assert alphabets == "bcd"
 
 sum = 0
 num_list : list[i32] = [1, 2, 3, 4]
 for i in num_list[1:3]:
     print(i)
     sum += i
-print("sum = "+str(sum))
+print("sum = ",sum)
 assert sum == 5
 
 sum = 0
 nested_list : list[list[i32]] = [[1, 2, 3, 4]]
 for i in nested_list[0]:
     print(i)
     sum += i
-print("sum = "+str(sum))
+print("sum = ",sum)
 assert sum == 10