Here are some samples to help get a better idea of Python's syntax:
Hello World (the traditional first program)
print('Hello world!') String formatting
name = 'Monty' print('Hello, %s' % name) # string interpolation print('Hello, {}'.format(name)) # string formatting Defining a function
def add_one(x): return x + 1 Testing variable equality
x = 1 y = 2 print 'x is equal to y: %s' % (x == y) z = 1 print 'x is equal to z: %s' % (x == z) names = ['Donald', 'Jake', 'Phil'] words = ['Random', 'Words', 'Dogs'] if names == words: print 'Names list is equal to words' else: print "Names list isn't equal to words" new_names = ['Donald', 'Jake', 'Phil'] print 'New names list is equal to names: %s' % (new_names == names) Defining a class with two methods
class Talker(object): def greet(self, name): print 'Hello, %s!' % name def farewell(self, name): print 'Farewell, %s!' % name Defining a list
dynamic_languages = ['Python', 'Ruby', 'Groovy'] dynamic_languages.append('Lisp') Defining a dictionary
numbered_words = dict() numbered_words[2] = 'world' numbered_words[1] = 'Hello' numbered_words[3] = '!' Defining a while loop
while True: if value == wanted_value: break else: pass Defining multiline strings
string = '''This is a string with embedded newlines. Also known as a tripled-quoted string. Whitespace at the beginning of lines is included, so the above line is indented but the others are not. ''' Splitting a long string over several lines of source code
string = ('This is a single long, long string' ' written over many lines for convenience' ' using implicit concatenation to join each' ' piece into a single string without extra' ' newlines (unless you add them yourself).') Defining a for loop
for x in xrange(1, 4): print ('Hello, new Python user!' 'This is time number %d') % x List comprehension
l = [x**2 for x in range(4)] print(l) # [0, 1, 4, 9] Set comprehension with condition
squares = {x**2 for x in [0,2,4] if x < 4} print(squares) # {0, 4}