Add 57 new questions and exercises

exercises/python/solutions/advanced_data_types_solution.md

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+## (Advanced) Identify the data type
+
+For each of the following, identify what is the data type of the result variable
+
+1. a = {'a', 'b', 'c'} -> set
+2. b = {'1': '2'} -> dict
+4. c = ([1, 2, 3]) -> list
+4. d = (1, 2, 3) -> tuple
+4. e = True+True -> int

exercises/python/solutions/data_types_solution.md

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+## Data Types - Solution
+
+1. a = [1, 2, 3, 4, 5] -> list
+2. b = "Hello, is it me you looking for?" -> string
+3. e = 100 -> int
+4. f = '100' -> string
+5. i = 0.100 -> float
+6. i = True -> bool
+
+### Bonus question - Answer
+
+`type(...)`

exercises/python/solutions/reverse_string.md

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+## Reverse a String - Solution
+
+```
+my_string[::-1]
+```
+
+A more visual way is:<br>
+<i>Careful: this is very slow</i>
+
+```
+def reverse_string(string):
+    temp = ""
+    for char in string:
+        temp =  char + temp
+    return temp
+```