SageMath version and banner info¶
- sage.misc.banner.banner()[source]¶
Print the Sage banner.
OUTPUT: none
If the environment variable
SAGE_BANNER
is set tono
, no banner is displayed. IfSAGE_BANNER
is set tobare
, a simplified plain ASCII banner is displayed. Otherwise, the full banner with box art is displayed.EXAMPLES:
sage: import sage.misc.banner; sage.misc.banner.SAGE_BANNER = '' sage: sage.misc.banner.banner() ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version ..., Release Date: ... │ │ Using Python .... Type "help()" for help. │ ...
>>> from sage.all import * >>> import sage.misc.banner; sage.misc.banner.SAGE_BANNER = '' >>> sage.misc.banner.banner() ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version ..., Release Date: ... │ │ Using Python .... Type "help()" for help. │ ...
- sage.misc.banner.banner_text(full=True)[source]¶
Text for the Sage banner.
INPUT:
full
– boolean (default:True
)
OUTPUT:
A string containing the banner message.
If option full is
False
, a simplified plain ASCII banner is displayed; ifTrue
the full banner with box art is displayed.EXAMPLES:
sage: print(sage.misc.banner.banner_text(full=True)) ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version ... sage: print(sage.misc.banner.banner_text(full=False)) SageMath version ..., Release Date: ...
>>> from sage.all import * >>> print(sage.misc.banner.banner_text(full=True)) ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version ... >>> print(sage.misc.banner.banner_text(full=False)) SageMath version ..., Release Date: ...
- sage.misc.banner.require_version(major, minor=0, tiny=0, prerelease=False, print_message=False)[source]¶
Return
True
if Sage version is at leastmajor.minor.tiny
.INPUT:
major
– integerminor
– integer (default: 0)tiny
– float (default: 0)prerelease
– boolean (default:False
)print_message
– boolean (default:False
)
OUTPUT:
True
ifmajor.minor.tiny
is <= version of Sage,False
otherwiseFor example, if the Sage version number is 3.1.2, then require_version(3, 1, 3) will return False, while require_version(3, 1, 2) will return True. If the Sage version is 3.1.2.alpha0, then require_version(3, 1, 1) will return True, while, by default, require_version(3, 1, 2) will return False. Note, though, that require_version(3, 1, 2, prerelease=True) will return True: if the optional argument prerelease is True, then a prerelease version of Sage counts as if it were the released version.
If optional argument print_message is
True
and this function is returning False, print a warning message.EXAMPLES:
sage: from sage.misc.banner import require_version sage: require_version(2, 1, 3) True sage: require_version(821, 4) False sage: require_version(821, 4, print_message=True) This code requires at least version 821.4 of SageMath to run correctly. You are running version ... False
>>> from sage.all import * >>> from sage.misc.banner import require_version >>> require_version(Integer(2), Integer(1), Integer(3)) True >>> require_version(Integer(821), Integer(4)) False >>> require_version(Integer(821), Integer(4), print_message=True) This code requires at least version 821.4 of SageMath to run correctly. You are running version ... False
- sage.misc.banner.version()[source]¶
Return the version of Sage.
OUTPUT: string
EXAMPLES:
sage: version() 'SageMath version ..., Release Date: ...'
>>> from sage.all import * >>> version() 'SageMath version ..., Release Date: ...'
- sage.misc.banner.version_dict()[source]¶
A dictionary describing the version of Sage.
OUTPUT: dictionary with keys ‘major’, ‘minor’, ‘tiny’, ‘prerelease’
This process the Sage version string and produces a dictionary. It expects the Sage version to be in one of these forms:
N.N N.N.N N.N.N.N N.N.str N.N.N.str N.N.N.N.str
where ‘N’ stands for an integer and ‘str’ stands for a string. The first integer is stored under the ‘major’ key and the second integer under ‘minor’. If there is one more integer, it is stored under ‘tiny’; if there are two more integers, then they are stored together as a float N.N under ‘tiny’. If there is a string, then the key ‘prerelease’ returns True.
For example, if the Sage version is ‘3.2.1’, then the dictionary is {‘major’: 3, ‘minor’: 2, ‘tiny’: 1, ‘prerelease’: False}. If the Sage version is ‘3.2.1.2’, then the dictionary is {‘major’: 3, ‘minor’: 2, ‘tiny’: 1.200…, ‘prerelease’: False}. If the Sage version is ‘3.2.alpha0’, then the dictionary is {‘major’: 3, ‘minor’: 2, ‘tiny’: 0, ‘prerelease’: True}.
EXAMPLES:
sage: from sage.misc.banner import version_dict sage: print("SageMath major version is %s" % version_dict()['major']) SageMath major version is ... sage: version_dict()['major'] == int(sage.version.version.split('.')[0]) True
>>> from sage.all import * >>> from sage.misc.banner import version_dict >>> print("SageMath major version is %s" % version_dict()['major']) SageMath major version is ... >>> version_dict()['major'] == int(sage.version.version.split('.')[Integer(0)]) True