I call: load("secp256k1.sage" where secp256k1.sage is from Bitcoin sources. I obtain:
Traceback (most recent call last):
File "/home/andrzej/SageMath/local/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3331, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-3-6446b3e63292>", line 1, in <module>
load("secp256k1.sage")
File "sage/misc/persist.pyx", line 143, in sage.misc.persist.load (build/cythonized/sage/misc/persist.c:2558)
sage.repl.load.load(filename, globals())
File "/home/andrzej/SageMath/local/lib/python3.8/site-packages/sage/repl/load.py", line 272, in load
exec(preparse_file(f.read()) + "\n", globals)
File "<string>", line 6, in <module>
File "sage/misc/persist.pyx", line 143, in sage.misc.persist.load (build/cythonized/sage/misc/persist.c:2558)
sage.repl.load.load(filename, globals())
File "/home/andrzej/SageMath/local/lib/python3.8/site-packages/sage/repl/load.py", line 272, in load
exec(preparse_file(f.read()) + "\n", globals)
File "<string>", line 178
print "Formula %s on Z%i:" % (name, p)
^
SyntaxError: invalid syntax
It uses python3.8 and print statement from Python 2.x
