Fix broken Python basics exercise scripts (issue #27)

test_playground/basics/boss.py

@@ -1,52 +1,20 @@
 choice = 'y'
 
-while choice =='y' : # make 'Y' valid too
+while choice in ('y', 'Y'): # make 'Y' valid too
     try:
-        # typecast the below 2 to a list
-
-        numbers =input("Enter the input numbers separated by spaces: ")
-        operators = input("Enter operators between them: ")
-
-        # check length matching
-
-        if len(numbers) != len(operators): # this seems odd... u might say it's ... off by one
-            print("What u doin fam ? ") # replace wiht better message :)
+        expr = input("Enter arithmetic expression: ").strip()
+        if not expr:
+            print("Please enter a valid expression.")
             continue
-
-        flag = False # huh this seems inverted
-        for i in range(len(numbers)): # indexing range fix
-            a, b, op = numbers[i-1], numbers[i], operators[i]
-            # correct the ops
-            match op:
-                case '+':
-                    c = a + b
-                case '-':
-                    c = a * b
-                case '*':
-                    c = a / b
-                case '/':
-                    c = a % b
-                case '%':
-                    c = a - b
-                case '//':
-                    c = a ** b
-                case '**':
-                    c = a // b
-                case _:
-                    flag = True
-            if not flag:
-                print("Invalid ops vro")
-                break
 
-            numbers[i-1] = c
-        if not flag:
-            continue
-        print(f"Output: numbers[-1]")
-    except Exception:
-        print(f"Exception: ...") # print exception
+        # Safe-ish eval for educational use: no builtins, only arithmetic expression support.
+        result = eval(expr, {"__builtins__": {}}, {})
+        print(f"Output: {result}")
+    except Exception as e:
+        print(f"Exception: {e}")
     finally:
         choice = input("Do you want to continue? [y/n] : ") # always ask before ending
 
 # can you make the code shorter and with improved answer? 
 # like handling any basic arithmetic equation (that may have brackets too) ?
-# u might wanna find a special function in python
+# u might wanna find a special function in python

test_playground/basics/conditionals.py

@@ -1,40 +1,47 @@
 # correct if else ladder to check if person is underage, normal citizen or senior citizen
 # [0,18) -> underage, [18,60) normal age, [60,inf) senior citizen
 # bonus, can you reduce ladder to a one liner?
-age = input("Enter age") # ahh yes age is str , definitely
-
-if age <= 0:
-    print("Lil bro")
-elif age > 100:
-    print("Pay up taxes, person")
+age = int(input("Enter age: "))
+
+if age < 0:
+    print("Invalid age")
+elif age < 18:
+    print("Underage")
+elif age < 60:
+    print("Normal citizen")
 else:
-    print("U still good, unc?")
+    print("Senior citizen")
 
 
 # complete the match
 
-day = input("Enter the day number") # dont forget to typecast to int
+day = int(input("Enter the day number: ")) # dont forget to typecast to int
 
-print("Today is: ") # how can you avoid printing newline here?
+print("Today is: ", end="") # how can you avoid printing newline here?
 
 match day:
     case 1:
         print("Monday")
-    # fill in the rest
+    case 2:
+        print("Tuesday")
+    case 3:
+        print("Wednesday")
+    case 4:
+        print("Thursday")
+    case 5:
+        print("Friday")
+    case 6:
+        print("Saturday")
+    case 7:
+        print("Sunday")
     case _:
-        print("Funday !") 
+        print("Invalid day")
 
 # implement try catch
 
 try:
     print(1/0)
-except IndentationError: # ahh fix the syntax, also when u don't know the error what will u use?
-    print("what u tryna do bro")
+except Exception as e: # ahh fix the syntax, also when u don't know the error what will u use?
+    print(f"what u tryna do bro: {e}")
 finally:
     print("So u done?")
-
-
-
-
-
-

test_playground/basics/hello.py

@@ -1,2 +1,2 @@
 # yayy
-"Hello World"(print)
+print("Hello World")

test_playground/basics/input_output.py

@@ -3,34 +3,29 @@
 # note: all inputs are strs by default
 
 
-integer = input("Enter an integer: ") # change only this line
+integer = int(input("Enter an integer: "))
 
 print(type(integer)) # should output 'int'
 
-number = input("Enter a number (floating point allowed): ") # change only this line
+number = float(input("Enter a number (floating point allowed): "))
 
 print(type(number)) # should output 'float'
 
-array = input("Enter an array of numbers: ") # change only this line
+array = list(map(float, input("Enter an array of numbers: ").split()))
 
 print(type(array)) # should output 'list'
 
 nums = [1,2,3,4]
 
-print(nums) # print it as a string joined by commas : 1,2,3,4
+print(",".join(map(str, nums))) # print it as a string joined by commas : 1,2,3,4
 
 
 name = input("Enter your name: ")
 
-print(f"Hello, name") # complete f string
+print(f"Hello, {name}") # complete f string
 
 x,y,z = 67, 420 , 9000
 
 
 # 6 print statements is too much, can you get the same output in one print statement ?
-print(x)
-print('\n')
-print(y)
-print('\n')
-print(z)
-
+print(x, y, z, sep="\n\n")

test_playground/basics/loops.py

@@ -1,20 +1,21 @@
 # print all multiples of 5 in [1,100]
 
-for i in range(3,99,4): # start, stop, step , range is [start,stop)
+for i in range(5, 101, 5): # start, stop, step , range is [start,stop)
     print(i,end=" ")
-
+print()
 
 names = ["Avanish","Awwab","Nathan"]
 nicknames = ["Amar","Akbar","Anthony"]
 
 for name,nickname in zip(names, nicknames): # wow cool new function
-    print("Name:  ...,  Nickname: ...") #  fill this at least
+    print(f"Name: {name}, Nickname: {nickname}")
 
 # try zip for adding this array to the above 2 and printing all 3 in loop
 hobbies = ["Marvel","Anime","Games"]
+for name, nickname, hobby in zip(names, nicknames, hobbies):
+    print(f"Name: {name}, Nickname: {nickname}, Hobby: {hobby}")
 
 choice = 'y'
 
-while choice == 'y': # can you make this case insensitive with one more condition?
+while choice in ('y', 'Y'): # can you make this case insensitive with one more condition?
     choice = input("Enter choice [y/n] : ")
-

test_playground/basics/vars_and_ops.py

@@ -3,23 +3,19 @@
 x = 10
 y = "5"
 
-print(x+y) # come on think, this ain't javascript
+print(x + int(y)) # come on think, this ain't javascript
 
 num1 , num2 = 6 , 7
 
-print(num1 // num2) # huh this shouldnt output 0, as a bonus can u also round to 2 decimal places?
+print(round(num1 / num2, 2)) # huh this shouldnt output 0, as a bonus can u also round to 2 decimal places?
 
 a , n = 1, 31
 
-for i in range(n):
-    a *= 2 # can you replace this loop with a one liner?
+a = 2 ** n
 
 
 # match the correct statements wrt bitwise operators
 
-print("AND operator:", " | ")
-print("OR operator:", " ^ ")
-print("XOR operator:", " & ")
-
-
-
+print("AND operator:", " & ")
+print("OR operator:", " | ")
+print("XOR operator:", " ^ ")