>>> '{} years ago'.format(2016 - 1991)
'25 years ago'

>>> b = '\n'.join(
...     ''.join(chr(j) for j in range(i, i+32))
...     for i in range(32, 128, 32)
...     )
>>> print b.decode('ascii')

 !"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
`abcdefghijklmnopqrstuvwxyz{|}~

>>> bytes_32_to_255 = '\n'.join(
...     ''.join(chr(j) for j in range(i, i+32))
...     for i in range(32, 256, 32)
...     )

bytes_32_to_255.decode('latin1')

 !"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
`abcdefghijklmnopqrstuvwxyz{|}~

 ¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿
ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
àáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ

bytes_32_to_255.decode('greek8', 'replace')

 !"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
`abcdefghijklmnopqrstuvwxyz{|}~

 ‘’£€₯¦§¨©ͺ«¬­�―°±²³΄΅Ά·ΈΉΊ»Ό½ΎΏ
ΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ�ΣΤΥΦΧΨΩΪΫάέήί
ΰαβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ�

>>> email = u'cañon'.encode('latin1')
>>> print email.decode('greek8')
caΓ±on

cañon → canyon

      C
      ↘
 sh ↘
       Python 1.0
ABC ↗
      ↗
 Modula-3

sorted(set(user.surname for user in users))

      C
      ↘
 sh ↘
       Python 1.0
ABC ↗
      ↗
 Modula-3

sorted(set(user.name for user in users))

names = {}

for user in users:
    names[user.surname] = None

names = names.keys()
names.sort()

      Haskell       Dylan
   comprehensions    MRO          with!
          ↘           ↘             ↓
Python     2.0   2.2   2.3   2.4   2.5 …
                 ↗           ↗
         generators    annotations
            Icon          Java

sorted(set(user.name for user in users))

cut -d" " -f1 users.txt | uniq | sort

'Hi, %s, you have %d messages.' % (name, n)

'Hi, {}, you have {} messages.'.format(name, n)
'The time is {:%H:%M}.'.format(datetime.now())

[u for u in users if u.age > 21]

filter(lambda u: u.age > 21, users)

[name.upper() for name in names]

map(str.upper, names)

'Without music, life would be a mistake'

"Without music, life would be a mistake"

rivers = [
    'Yaque del Norte',
    'Yaque del Sur'
    ]

rivers = [
    'Yaque del Norte',
    'Yaque del Sur'
    'Yuna River'
    ]

rivers = [
    'Yaque del Norte',
    'Yaque del Sur',
    ]

rivers = [
    'Yaque del Norte',
    'Yaque del Sur',
    'Yuna River',
    ]

with open('data.csv') as f:
    lines = list(f)

if not lines:
    return

count = len(lines)

new Integer(3.0);   int(3.0)
(int) height;       int(height)
method('/');        method('/')

int r = printf("Hello, world!");
if (r == -1) {
    return NULL;
}

def f():
    print "Hello, world!"

try:
    f()
except IOError:
    …

$ awk 'END {print 30 + "40"}'
70

$ perl -e 'print 30 + "40"'
70

js> '30' + 40
'3040'
js> '30' - 40
-10

>>> '30' + 40
Traceback (most recent call last):
  ...
TypeError: cannot concatenate 'str'
 and 'int' objects

>>> import this