Changes between Version 53 and Version 54 of ControlSystems/SoftwareTeam/IntroToPython

Timestamp:

Sep 4, 2017, 7:28:50 PM (8 years ago)

Author:

cdelgigante

Comment:

--

ControlSystems/SoftwareTeam/IntroToPython

@@ -206 +206 @@
  * `round(x,[n])`:  Rounds a decimal number x to n digits after the decimal point.  The [] means that the n is optional, if you don't include it, n=0.
  * `sum(iterable)`:  Sums all the numbers in the list ''iterable''.
- * str.isdigit():   Strings and some other variable types like lists have some special functions just for them, called methods.  This one returns true of all of the digits in the string are numbers, others are [[https://docs.python.org/3/library/stdtypes.html#string-methods|here]].   '123' would return ''True'', "Cat" would return ''False''. Handy for validation
+ * `<string>.isdigit()`:   Strings and some other variable types like lists have some special functions just for them, called methods.  This one returns true of all of the digits in the string are numbers, others are [[https://docs.python.org/3/library/stdtypes.html#string-methods|here]].   '123' would return ''True'', "Cat" would return ''False''. Handy for validation.  You call them *on* the variable itself.
 
 Here's some examples of how they're used (don't forget to look at earlier lessons for range() and print().
@@ -228 +228 @@
 {{{
 #!python
-while(!x.isdigit())
+while (!x.isdigit())  # The ! means 'not'.  In this case if x is not all digits, run the block of code in the while loop
    x=input("Enter x")
-while(!x.isdigit())
+while (!y.isdigit())
    y=input("Enter y")
-z=pow(x,y)
+z = pow(x,y)
 if z>100:
   print("That's-a big number!")