KeyboardInterrupt to propagate.
except block may be an indication that the programmer intended to
-handle the exception but never wrote the code to do so.
+handle the exception, but never wrote the code to do so.
In this example the program keeps running with the same privileges if it fails to drop to lower +
In this example, the program keeps running with the same privileges if it fails to drop to lower privileges.
-In this example the call to super(Vehicle, self) in Car.__init__ is incorrect as it
+In this example, the call to super(Vehicle, self) in Car.__init__ is incorrect, as it
passes Vehicle rather than Car as the first argument to super.
As a result, super(SportsCar, self).__init__() in the SportsCar.__init__ method will not call
all __init__() methods because the call to super(Vehicle, self).__init__()
@@ -37,7 +37,7 @@ skips StatusSymbol.__init__().
Dictionary literals are constructed in the order given in the source. -This means that if a key is duplicated the second key-value pair will overwrite -the first as a dictionary can only have one value per key. +This means that if a key is duplicated, the second key-value pair will overwrite +the first; as a dictionary can only have one value per key.
This example will output "c" because the mapping between 2 and "b" is overwritten by the -mapping from 2 to "c". The programmer may have meant to map 3 to "c" instead.
+The following example will output "c", because the mapping between 2 and "b" is overwritten by the
+mapping from 2 to "c". The programmer may have meant to map 3 to "c" instead.
with statement.
In the first example, rather than close the zip file in a conventional manner the programmer has called __del__.
+
In the first example, rather than close the zip file in a conventional manner, the programmer has called __del__.
A safer alternative is shown in the second example.
A format string, that is the string on the left hand side of an expression like fmt % arguments, must consist of legal conversion specifiers.
+
A printf-style format string (i.e. a string that is used as the left hand side of the % operator, such as fmt % arguments)
+must consist of valid conversion specifiers, such as %s, %d, etc.
Otherwise, a ValueError will be raised.
Choose a legal conversion specifier.
+Ensure a valid conversion specifier is used.
In format_as_tuple_incorrect, "t" is not a legal conversion specifier.
+
In the following example, format_as_tuple_incorrect, %t is not a valid conversion specifier.
ValueError will be raised.
When a function contains both explicit returns (return value) and implicit returns
-(where code falls off the end of a function) this often indicates that a return
+(where code falls off the end of a function), this often indicates that a return
statement has been forgotten. It is best to return an explicit return value even when returning
None because this makes it easier for other developers to read your code.
None as this equates to False. However
default=None, check if the parameter is