Python: Difference between revisions
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print "2 + 2 is", 2 + 2 | print "2 + 2 is", 2 + 2 | ||
The first argument is the string "2 + 2 is" and the second argument is the mathematical expression 2 + 2, which is commonly referred to as an expression | The first argument is the string "2 + 2 is" and the second argument is the mathematical expression 2 + 2, which is commonly referred to as an expression. each of the arguments separated by a comma | ||
sys.argv arguments are passed to the script in the variable sys.argv | sys.argv arguments are passed to the script in the variable sys.argv | ||
# is used to start a comment | # is used to start a comment | ||
Revision as of 21:18, 5 October 2011
links
http://en.wikibooks.org/wiki/Non-Programmer%27s_Tutorial_for_Python_2.6 http://docs.python.org/tutorial
Reference
http://docs.python.org/ref/ref.html
basics
print "Hello, World!"
command called print followed by one argument,which is "Hello, World!". (referred to as a string of characters, or string) Command and its arguments are collectively referred to as a statement,
print "2 + 2 is", 2 + 2
The first argument is the string "2 + 2 is" and the second argument is the mathematical expression 2 + 2, which is commonly referred to as an expression. each of the arguments separated by a comma
sys.argv arguments are passed to the script in the variable sys.argv # is used to start a comment