如何在python中的tinydb查询中包含变量？

Question

from tinydb import TinyDB, Query
db = TinyDB('db.json')
ddd = Query()
kl = free
output = db.search(ddd.state == 'free')

如何在tinydb db.search中使用变量 k1 ？

Answer 1

只需在#!/usr/bin/gnuplot set term png font ",18" enh size 1000,1000 set view map unset surface set contour base set cntrparam level incremental 0.005, 0.02, 0.5 set key at screen 1, 0.9, 0 set rmargin 0.50 # a=6.3457 set xra[0.:2.60*a] set yra[0.:1.73*a] set xtics out nomirror set ytics axis in offset -4.0,0 nomirror set label "r (a.u)" at 3.4,-2.2 center set label "r (a.u)" at -1.7,2.5 rotate by 90 center set out 'M.1.-1.112.3.888.png' splot 'M.1.-1.112.3.888.dat' u 1:2:3 w l lw 2 t ''

中使用它即可

db.search

输出

from tinydb import TinyDB, Query
db = TinyDB('db.json')
ddd = Query()
db.insert({'state': 'free', 'field': 1})
db.insert({'state': 'n', 'field': 2})
db.insert({'state': 'free', 'field': 3})
kl = 'free'
output = db.search(ddd.state == kl)
print(output)