updated

Author: PavanMudigondaTR

0-examples/one.py

@@ -0,0 +1,2 @@
+print("Hello, World!")
+

10-temp/main.py

@@ -1,8 +1,13 @@
 unit = input("Enter the unit of temperature (F/C): ")
+
+# In US temperate is measured in Fahrenheit F
+# In Canada temperature is measured in Centigrade/Celsius C
+
 temp = float(input("Enter the temperature: "))
+
 if unit == "F":
-    temp = round(((temp - 32) * 5) / 9)
-    print(f'The temperature in Fahrenheit is, {temp} {unit}')
+    temp = (( temp - 32 ) * 5.0/9.0)
+    print(f'The temperature in Fahrenheit is, {temp} C °')
 elif unit == "C":
-    temp = round(((temp * 9 ) / 5) + 32)
-    print(f'The temperature in Celsius is, {temp} {unit}')
+    temp = ( ( temp * 9.0/5.0 ) + 32 )    
+    print(f'The temperature in Celsius is, {temp} F ')

12-conditional/main.py

@@ -1,8 +1,18 @@
 num = 5
 a = 6
 b = 7
+age = 13
+temperature = 22
+
+user_role = 'admin'
+
+print("positive" if num > 0 else "non-positive")
+result = 'EVEN' if num % 2 == 0 else 'ODD'
+print(result)
 
 max_num = a if a > b else b
 print(f'maximum number: {max_num}')
 min_num = a if a < b else b
-print(f'minimum number: {min_num}')
+print(f'minimum number: {min_num}')
+
+access_level = 'Full Access' if user_role == 'admin' else 'non-admin'

13-string/main.py

@@ -1,5 +1,7 @@
 name = input("Enter your name: ")
 
+
+
 print("Hello, " + name + "!")
 
 len = len(name)
@@ -23,9 +25,20 @@
 
 print("The position of the letter 'P': " + str(find_p))
 
-#result = name.isdigit()
+name = name.capitalize()
+
+result = name.isdigit()
 
 result = name.isnumeric()
 
 
-print("Is your name a number? " + str(result))
+
+print("Is your name a number? " + str(result))
+
+phone_number = input("what is your phone number ?")
+
+phone_number = phone_number.replace('-',"")
+
+print(phone_number)
+
+print(help(str))

13-string/task.py

@@ -0,0 +1,15 @@
+# validate user input exercise
+
+# 1. username is no more than 12 characters
+# 2. username must not contain spaces
+# 3. username must not contain digits
+
+user_name = input("enter a username: ")
+if len(user_name) > 12:
+    print("username can not be more than 12 characters")
+elif not user_name.find(" ") == -1:
+    print("username can not contain a space")
+elif not user_name.isalpha():
+    print("user name can not contain numerics")
+else:
+    print(f"welcome {user_name}")

14-index/main.py

@@ -1,3 +1,24 @@
-credit_card = '4111123456781234'
+# indexing = accessing elements of a sequence using [] (indexing operator) 
+# [start : end : step]
 
-print(credit_card[0:4])
+credit_card = '4111-1234-5678-1234'
+
+print(credit_card[0])
+
+print(credit_card[2])
+
+print(credit_card[0:4])
+
+print(credit_card[0:4])
+
+print(credit_card[5:9])
+
+print(credit_card[5:])
+
+print(credit_card[-1])
+
+print(credit_card[::3])
+
+print(credit_card[::-1])
+
+print(f'')

15-format/main.py

@@ -1,12 +1,24 @@
+# format specifers = {:flags} format a value based on what
+#                             flags are inserted
+
+# :.2f → Round to 2 decimal places (fixed-point notation).
+# :10 → Allocate 10 spaces (default is right-aligned).
+# :>10 → Right justify within 10 spaces.
+# :<10 → Left justify within 10 spaces.
+# :^10 → Center align within 10 spaces.
+# :03 → Zero-pad to width 3.
+# :+ → Show + for positive numbers.
+# := → Place sign at the leftmost position.
+# :  → Insert a space before positive numbers.
+# : , → Add comma as thousands separator.
+
 price1 = 3.234443
 price2 = 4.234443
 price3 = 5.234443
 price4 = 1234567.234443
 
-print(f'Price 1: $ {price1:.2f}')
-print(f'Price 1 - right justified: $ {price1:>10}')
-print(f'Price 1 - left justified: $ {price1:<10}')
-
-print(f'Price 1 - left justified: $ {price4: ,}')
-
-print(f'Price 1 - left justified: $ {price4: ,.2f}')
+print(f'Price 1: $ {price1:.2f}')        # $ 3.23 (rounded to 2 decimals)
+print(f'Price 1 - right justified: $ {price1:>10}')  # spaces before number
+print(f'Price 1 - left justified: $ {price1:<10}')   # spaces after number
+print(f'Price 4 with comma: $ {price4:,}')           # $ 1,234,567.234443
+print(f'Price 4 with comma & 2 decimals: $ {price4:,.2f}') # $ 1,234,567.23

16-while/age.py

@@ -1,3 +1,4 @@
+# execute some code WHILE some condition remains true
 age = int(input("Enter your age: "))
 
 while age < 18:

16-while/food.py

@@ -1,3 +1,4 @@
+# execute some code WHILE some condition remains true
 food = input("What is your favorite food? ")
 
 while food != "q":

16-while/num.py

@@ -1,4 +1,5 @@
 
+# execute some code WHILE some condition remains true
 num = input("Enter a number between 1 and 10: ")
 
 while int(num) < 1 or int(num) > 10: