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'6r[c tts9 td}|jdDcgc]}|j c}atj%tj't(} tj+tj-| |rtD cgc]} | d d c} StScc}w#t $rgd} ddl}|j|dd|j}|j}n3#t$r'tjdj|}YnwxYwd}|D]F}|jd s|jd ddj jd}H|j|Dcgc]}t!j"d d |ncc}w}}|aYvwxYwcc} w)Nzsupported-versionsr)z/usr/bin/apt-cachez--no-all-versionsshowz python3-allrr2F)bufsizeshellstdout zDepends::z\s*(\S+)[ (]?.*z\1rV)default_version_supported_versionsrr%r<r subprocessPopenPIPErc ImportErrorr popenjoin startswithrr>subpopindex_default_versionsortappend) r-rrYcmdrhpfddependslinedefaultrOs rr;r;rs  * !56E6;kk#6F"G1779"G $"%%&9&?&?@P&QRGw'23!!"33""1#H **C -!$$S!+0%JXX -XXchhsm, -G G??:."jja0399;AA#FG G HHJELMrvv0%;MMGM") ! **4s_CB>C) G>C G/DG-D1.G0D11G AGF43 GGctstjdatd}t|tjj d|fvrt d|z|a|r tddStS)Nz/usr/bin/python3zdefault-versionz/usr/binzkthe symlink /usr/bin/python3 does not point to the python3 default version. 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