.
Thread 5 (LWP 25817):
#0  0x00007f5299d1947d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 4 (LWP 25815):
#0  0x00007f5299fff03e in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 25814):
#0  0x00007f5299d1947d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 25813):
#0  0x00007f5299d1947d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 25812):
#0  0x00007f528ef5404b in ?? ()
No symbol table info available.
#1  0x00007f5295ed19c0 in ?? ()
No symbol table info available.
#2  0x00007f5294106d38 in ?? ()
No symbol table info available.
#3  0x00007f528ef374e8 in ?? ()
No symbol table info available.
#4  0x00000000004dc723 in validate_stmt (stmt=0x234bac0) at ../Python/ast.c:331
        i = <optimized out>
#5  validate_stmts.78544 (seq=0x7ffffa2405e0) at ../Python/ast.c:434
        stmt = 0x234bac0
        i = 23
#6  0x00000000005730c5 in sre_category (ch=<optimized out>, category=<optimized out>) at ../Modules/_sre.c:211
No locals.
#7  sre_ucharset.48881 (set=0x4, ch=38764232) at ../Modules/_sre.c:416
        ok = -637297386
#8  0x00007f529417dfb0 in ?? ()
No symbol table info available.
#9  0x00007f5294073d40 in ?? ()
No symbol table info available.
#10 0x0000000000944340 in send_doc.41201.8871 ()
No symbol table info available.
#11 0xa9543a5061200506 in ?? ()
No symbol table info available.
#12 0x00007f5294113390 in ?? ()
No symbol table info available.
#13 0x0000000000000000 in ?? ()
No symbol table info available.