CoCalc -- 2530.sagews

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Project: sagenb.org published worksheets

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a=5

5

2==2

True

2>3

False

2**3

8

5/2

5/2

5//2

2

18%5

3

10

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_11.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("MDk="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmptfu6nB/___code___.py", line 2
    _sage_const_09 = Integer(09)
                              ^
SyntaxError: invalid token

sin?

File: /usr/local/sage2/local/lib/python2.6/site-packages/sage/functions/trig.py

Type: <class ‘sage.functions.trig.Function_sin’>

Definition: sin(*args, coerce=True, hold=False, dont_call_method_on_arg=False)

Docstring:

The sine function.

EXAMPLES:

sage: sin(0)
0
sage: sin(x).subs(x==0)
0
sage: sin(2).n(100)
0.90929742682568169539601986591
sage: loads(dumps(sin))
sin

def is_even(n):

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_26.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzIGV2ZW46"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmppgjYY_/___code___.py", line 2
    def is even:
         ^
SyntaxError: invalid syntax

return n%2==0

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_14.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("cmV0dXJuIG4lMj09MA=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpIo6jdm/___code___.py", line 3
    return n%_sage_const_2 ==_sage_const_0 
SyntaxError: 'return' outside function

def is_even(n):
   return n%2==0
is even(123)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_27.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzX2V2ZW4obik6CiAgIHJldHVybiBuJTI9PTAKaXMgZXZlbigxMjMp"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmp0PLcfu/___code___.py", line 5
    is even(_sage_const_123 )
     ^
SyntaxError: invalid syntax

def is even:
 
is even(123)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_16.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzIGV2ZW46CiByZXR1cm4gbiUyPT0wCmlzIGV2ZW4oMTIzKQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmptqLJGY/___code___.py", line 3
    def is even:
         ^
SyntaxError: invalid syntax

def is even:
return n%2==0
is even(2)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_17.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzIGV2ZW46CiAgIHJldHVybiBuJTI9PTAKaXMgZXZlbigyKQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpBYPPIu/___code___.py", line 3
    def is even:
         ^
SyntaxError: invalid syntax

def is even:
return n%2==0
is even(2)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_18.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzIGV2ZW46CnJldHVybiBuJTI9PTAKaXMgZXZlbigyKQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpKsQPIR/___code___.py", line 3
    def is even:
         ^
SyntaxError: invalid syntax

teacher tell me why?haw to do this example...

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_19.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("dGVhY2hlciB0ZWxsIG1lIHdoeT9oYXcgdG8gZG8gdGhpcyBleGFtcGxlLi4u"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmp1ZP6Rj/___code___.py", line 2
    teacher tell me why?haw to do this exampleEllipsis
               ^
SyntaxError: invalid syntax

def is even(n):
    return n%2==0

is even(2)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_20.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzIGV2ZW4obik6CiAgICByZXR1cm4gbiUyPT0wCgppcyBldmVuKDIp"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpYeO6e0/___code___.py", line 3
    def is even(n):
         ^
SyntaxError: invalid syntax

sage: def is-divisible-by(number，divisor=2):
....:    return number%divisor==0
....:
sage: is-divisible-by(123，5)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_22.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzLWRpdmlzaWJsZS1ieShudW1iZXIsZGl2aXNvcj0yKToKICAgcmV0dXJuIG51bWJlciVkaXZpc29yPT0wCgppcy1kaXZpc2libGUtYnkoMTIzLDUp"),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpVYfs6D/___code___.py", line 3
    def is-divisible-by(number,divisor=_sage_const_2 ):
         ^
SyntaxError: invalid syntax

sage: def is_divisible_by(number，divisor=2):
....:    return number%divisor==0
....:
sage: is-divisible-by(123，5)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_25.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("ZGVmIGlzX2RpdmlzaWJsZV9ieShudW1iZXLvvIxkaXZpc29yPTIpOgogICByZXR1cm4gbnVtYmVyJWRpdmlzb3I9PTAKCmlzLWRpdmlzaWJsZS1ieSgxMjPvvIw1KQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpFRpXpp/___code___.py", line 3
    def is_divisible_by(number，divisor=_sage_const_2 ):
                              ^
SyntaxError: invalid syntax

if expression:
   if_suite
else: 
   else_suite
elif expressionl:
   elif_suite

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_24.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("aWYgZXhwcmVzc2lvbjoKICAgaWZfc3VpdGUKZWxzZTogCiAgIGVsc2Vfc3VpdGUKZWxpZiBleHByZXNzaW9ubDoKICAgZWxpZl9zdWl0ZQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single')
  File "", line 1, in <module>
    
  File "/tmp/tmpglk57v/___code___.py", line 6
    elif expressionl:
       ^
SyntaxError: invalid syntax

if expression:
   if_suite
else: 
   else_suite
elif expressionl:
   elif_suite
def myfaction(x): 
   if x<0: 
      retrun -1
   elif x==0:
      return 0
   else: 
      return 1
myfunction(-2)

Traceback (most recent call last):    def myfaction(x): 
  File "", line 1, in <module>
    
  File "/tmp/tmpuSTa2q/___code___.py", line 7
    elif expressionl:
       ^
SyntaxError: invalid syntax