Create if_else.py

python/if_else.py

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+# if statements are conditional. 
+# inside the if statement only executes if the condition 
+# evaluates to True. 
+# indention is critical. 
+# all statements inside the if must have same indention. 
+pressure = 52
+
+if pressure > 50:
+  print("WARNING! High Pressure")
+  print("I like cashews.")
+
+# after an if, you can also have elif and/or else statements
+if pressure > 50:
+  print("WARNING! High Pressure")
+elif(pressure > 30 and pressure <= 50):   # short for else if 
+  print("Normal Pressure")
+  print("I like macademias.")
+# else will execute only when if and elif statements all evaluate to False. 
+else:
+  print("Low Pressure.")