Unix Tcl错误：错误；设置varName？newValue？“；

我试图运行以下Tcl脚本，但出现了错误：错误#args:应该是“set varName？newValue？”

这是什么意思

注意：脚本包括特定于VMD程序的术语，如mol和resid。请不要理会他们

#count water molecules between chain A and chain C or between #chain B and chain C


set input_file [open ./name_3_pdb_chain_renamed.dat r]

set data [read $input_file]
set data [split $data "\n"]
close $input_file

set chain_list [lindex $data 0]

cd 7_count_water

set outfile [open count_water3.dat w]


set chain_compare ""

set pdblen [llength $chain_list]

for {set i 0} {$i<$pdblen} {incr i} {
    set pid [lindex [lindex $chain_list $i] 0]

    set len [llength [lindex $chain_list $i]]

    mol load pdb ../2_chain_rename/${pid}_chain_revised.pdb


    mol modstyle 0 top NewCartoon



    if {$len==4} {
        set chain_compare [lappend chain_compare $pid]
    }

    set 11 [atomselect top all]

    set mid [$11 molid]

    mol delete $mid
}




set lll [llength $chain_compare]

for {set j 0} {$j< $lll} {incr j} {

    set pid [lindex $chain_compare $j]

    mol load pdb ../2_chain_rename/${pid}_chain_revised.pdb

    set 11 [atomselect top "chain A and name CA"]

    set res_len [llength [$11 get resid]]

    set res_id [$11 get resid]

    #residue length for chain C
    set ag [atomselect top "chain C and name CA"]
    set ag_len [llength [$ag get resid]]
    set ag_id [$ag get resid]


    #loop water between chain A and chain C
    for {set k 0} {$k<$res_len} {incr k} {

        set water_around_a [atomselect top "{resname HOH and {within 5.0 of {chain A and resid [lindex $res_id $k]} and {within 5.0 of chain C}}} "]


        set water_around_a_resid [$water_around_a get resid]
        set water_around_a_resname [$water_around_a get resname]

        #loop antigen residues around water
        for {set g 0} {$g < $ag_len} {incr g} {

          set ag_around_water [atomselect top "{chain C and resid [lindex $ag_id $g] and {within 5.0 of {resname HOH and {within 5.0 of {chain A and resid [lindex $res_id $k]}}}}} "]

            set ag_around_water resid [$ag_around_water get resid]

            set ag_around_water_resname [$ag_around_water get resname]


            puts $outfile "$pid [lindex $res_id $k] [lindex [$11 get resname] $k] $ag_around_water_resname A: $water_around_a_resname"
       }
    }



    set b11 [atomselect top "chain B and name CA"]

    set b_res_len [llength [$b11 get resid]]

    set b_res_id [$b11 get resid]

    #residue length for chain C
    set ag [atomselect top "chain C and name CA"]
    set ag_len [llength [$ag get resid]]
    set ag_id [$ag get resid]

    for {set k 0} {$k<$res_len} {incr k} {


        set water_around_b [atomselect top "{resname HOH and {within 5.0 of {chain B and resid [lindex $b_res_id $k]} and {within 5.0 of chain C}}} "]

        set water_around_b_resid [$water_around_b get resid]
        set water_around_b_resname [$water_around_b get resname]

        #loop antigen residues around water
        for {set g 0} {$g < $ag_len} {incr g} {

             set ag_around_water [atomselect top "{chain C and resid [lindex $ag_id $g] and {within 5.0 of {resname HOH and {within 5.0 of {chain B and resid [lindex $b_res_id $k]}}}}} "]


            set ag_around_water resid [$ag_around_water get resid]

            set ag_around_water_resname [$ag_around_water get resname]

            puts $outfile "$pid [lindex $b_res_id $k] [lindex [$b11 get resname] $k] $ag_around_water_resname A: $water_around_b_resname"


        }

    }

}


close $outfile

cd ..

#计算链A和链C之间或链B和链C之间的水分子
设置输入文件[打开。/name\u 3\u pdb\u chain\u重命名为.dat r]
设置数据[读取$input\u文件]
设置数据[拆分$data”\n“]
关闭$input\u文件
设置链列表[lindex$data 0]
cd 7\u计数\u水
设置输出文件[未清计数\u水3.dat w]
设置链\u比较“”
设置pdblen[L长度$chain_列表]
对于{set i 0}{$i行
set ag_around_water resid[$ag_around_water get resid]
需要更改。您可能希望改为
ag_around_water_resid
。
该消息：

wrong # args: should be "set varName ?newValue?"
变量名中有一个空格而不是下划线。现在，空格在变量名中是合法的，但是变量名需要被引用，这可能会有点烦人。通常最好避免这样使用它们。没有引用，Tcl不知道这是一个单词；通用解析层decides实际上有四个词（
set
，
ag\u-arou-water
，
resid
，还有复杂的
[$ag\u-arou-water-get-resid]
）告诉
set
去处理它不喜欢的事情

请记住，Tcl的通用语法分析首先发生在从语义上解释命令参数之前。始终。
您的
set
命令中有一个参数太多（或太少）。在出现此错误之前，请使用调试器或puts缩小脚本的范围。
            set ag_around_water resid [$ag_around_water get resid]