如何在 Ubuntu 20.04 上安装 Sagemath？

Question

为什么在 Ubuntu 上安装 Sagemath 失败？我试过

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jaakko@jaakko-Aspire-E1-572:~$ sudo apt install sagemath-common\n[sudo] password for jaakko: \nReading package lists... Done\nBuilding dependency tree       \nReading state information... Done\nThe following NEW packages will be installed:\n  sagemath-common\n0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.\nNeed to get 16,2 MB of archives.\nAfter this operation, 205 MB of additional disk space will be used.\nGet:1 http://fi.archive.ubuntu.com/ubuntu focal/universe amd64 sagemath-common all 9.0-1ubuntu4 [16,2 MB]\nFetched 16,2 MB in 4s (3\xe2\x80\xaf888 kB/s)            \nSelecting previously unselected package sagemath-common.\n(Reading database ... 216481 files and directories currently installed.)\nPreparing to unpack .../sagemath-common_9.0-1ubuntu4_all.deb ...\nUnpacking sagemath-common (9.0-1ubuntu4) ...\nSetting up sagemath-common (9.0-1ubuntu4) ...\n/usr/lib/python3/dist-packages/sage/combinat/root_system/branching_rules.py:1753\n: SyntaxWarning: "is not" with a literal. Did you mean "!="?\n  if len(stypes) is not 2:\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1159: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1168: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1175: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1182: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1189: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1196: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\n/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1203: SyntaxWarning: '\nstr' object is not callable; perhaps you missed a comma?\n  raise TypeError('%s option must be a dictionary, not %s' (name, value))\nProcessing triggers for man-db (2.9.1-1) ...\njaakko@jaakko-Aspire-E1-572:~$ sage\n\xe2\x94\x8c\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x90\n\xe2\x94\x82 SageMath version 9.0, Release Date: 2020-01-01                     \xe2\x94\x82\n\xe2\x94\x82 Using Python 3.8.5. Type "help()" for help.                        \xe2\x94\x82\n\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x80\xe2\x94\x98\nTraceback (most recent call last):\n  File "/usr/share/sagemath/bin/sage-ipython", line 12, in <module>\n    from sage.repl.interpreter import SageTerminalApp\n  File "/usr/lib/python3/dist-packages/sage/repl/interpreter.py", line 105, in <module>\n    from sage.repl.preparse import preparse, containing_block\n  File "/usr/lib/python3/dist-packages/sage/repl/preparse.py", line 227, in <module>\n    from sage.repl.load import load_wrap\n  File "/usr/lib/python3/dist-packages/sage/repl/load.py", line 19, in <module>\n    from sage.cpython.string import str_to_bytes, bytes_to_str, FS_ENCODING\nModuleNotFoundError: No module named 'sage.cpython.string'\njaakko@jaakko-Aspire-E1-572:~$ \n

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Answer 1

要安装 Sage Math，请输入命令sudo apt install sagemath。

sagemath-common（您安装的）是整个包的众多依赖项之一。当您安装时sagemath，它会自动安装所有必需的依赖项。