#reserved words and identation

Reserved Words

The following list shows the Python keywords. These are reserved words and you cannot use them as constant or variable or any other identifier names. All the Python keywords contain lowercase letters only.andexecnotassertfinallyorbreakforpassclassfromprintcontinueglobalraisedefifreturndelimporttryelifinwhileelseiswithexceptlambdayield

Lines and Indentation

Python provides no braces to indicate blocks of code for class and function definitions or flow control. Blocks of code are denoted by line indentation, which is rigidly enforced.The number of spaces in the indentation is variable, but all statements within the block must be indented the same amount. For example −

if True:

   print "True"

else:

   print "False"

However, the following block generates an error −

if True:

print "Answer"

print "True"

else:

print "Answer"

print "False"

Thus, in Python all the continuous lines indented with same number of spaces would form a block. The following example has various statement blocks −Note − Do not try to understand the logic at this point of time. Just make sure you understood various blocks even if they are without braces