A=matrix(2,2,[mod(1,10),mod(1,10),mod(1,10),mod(0,10)])
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print(A)
Traceback (click to the left of this block for traceback) ... NameError: name 'A' is not defined Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_3.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("cHJpbnQoQSk="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpjjmKgt/___code___.py", line 2, in <module>
exec compile(u'print(A)
File "", line 1, in <module>
NameError: name 'A' is not defined
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type(A[0,0])
<type 'sage.rings.finite_rings.integer_mod.IntegerMod_int'> <type 'sage.rings.finite_rings.integer_mod.IntegerMod_int'> |
print(A^20)
[6 5] [5 1] [6 5] [5 1] |
fibonacci(21)
10946 10946 |
def hailstone(n):
if type(n) != Integer:
print("Dummy!") # Tell the user that he is an idiot for running this on a non-integer
return(1/2)
elif n<=0:
print("Please use a positive value") #The user is still an idiot
return(-1)
elif is_even(n):
return(Integer(n/2))
else:
return(3*n+1)
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hailstone(n)
Dummy! 1/2 Dummy! 1/2 |
n=range(5)[3]
print(n)
print(type(n))
print(type(3))
3 <type 'int'> <type 'sage.rings.integer.Integer'> 3 <type 'int'> <type 'sage.rings.integer.Integer'> |
hailstone(1)
4 4 |
hailstone_list=[0,0]
for n in srange(2,10000):
count=0
while n>1:
count+=1
n=hailstone(n)
#print(n,count)
hailstone_list.append(count)
#print(hailstone_list)
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hailstone_list[49999]
88 88 |
type(hailstone(10))
<type 'sage.rings.integer.Integer'> <type 'sage.rings.integer.Integer'> |
list_plot(hailstone_list)
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hailstone_even=[hailstone_list[2*i] for i in srange(len(hailstone_list)/2)]
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hailstone_odd=[hailstone_list[2*i+1] for i in srange(len(hailstone_list)/2)]
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len(hailstone_odd)
5000 5000 |
A=list_plot(hailstone_odd,color='red')
B=list_plot(hailstone_even,color='blue')
show(A+B)
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max(hailstone_list)
Traceback (click to the left of this block for traceback) ... NameError: name 'hailstone_list' is not defined Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_4.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("bWF4KGhhaWxzdG9uZV9saXN0KQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpjrglcB/___code___.py", line 2, in <module>
exec compile(u'max(hailstone_list)
File "", line 1, in <module>
NameError: name 'hailstone_list' is not defined
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