How to print line for specific conditions using lxml in a long XML-CodePudding

XML example as follows:

<File>
    <Sub_Function_1>
        <Messages>
            <Setting>
                <Data>
                    <Label>Setting_2</Label>
                    <Value>
                        <Measure>
                            <Data>Area_2</Data>
                            <Bound>
                                <Value>
                                    <Speed>2000</Speed>
                                </Value>
                                <Condition>
                                    <Data>0</Data>
                                </Condition>
                            </Bound>
                            <Bound>
                                <Value>
                                    <Distance>10000</Distance>
                                </Value>
                                <Condition>
                                    <Data>12000</Data>
                                </Condition>
                            </Bound>
                        </Measure>
                    </Value>
                </Data>
                <Data>
                    <Label>Setting_3</Label>
                    <Value>
                        <Default_value_if_undefined>
                            <Value>
                                <Value_on_condition>
                                    <Case>
                                        <Value>
                                            <Measure>
                                                <Speed>25</Speed>
                                                <Bound>
                                                    <Value>
                                                        <Time>2000</Time>
                                                    </Value>
                                                    <Condition>
                                                        <Speed>0</Speed>
                                                    </Condition>
                                                </Bound>
                                                <Bound>
                                                    <Value>
                                                        <Distance>10000</Distance>
                                                    </Value>
                                                    <Condition>
                                                        <Speed>12000</Speed>
                                                    </Condition>
                                                </Bound>
                                            </Measure>
                                        </Value>
                                        <Condition>
                                            <Data>Area_0</Data>
                                        </Condition>
                                    </Case>
                                </Value_on_condition>
                            </Value>
                            <Default_value>
                                <Integer>2000</Integer>
                            </Default_value>
                        </Default_value_if_undefined>
                    </Value>
                </Data>
            </Setting>
        </Messages>
    </Sub_Function_1>
</File>

Code is as follows:

for k in doc2.xpath('//Measure//Data[following-sibling::Bound]'):
    val1 = k.xpath('following-sibling::Bound[1]/Value/*')[0]
    val2 = k.xpath('following-sibling::Bound[2]/Value/*')[0]
    if val1.tag !=val2.tag:
        print("val:",val1.tag,"--",val1.sourceline,val2.tag,"--",val2.sourceline)

for k in doc2.xpath('//File[.//Measure//Data[following-sibling::Bound]]'):
    val1 = k.xpath('.//Measure//Data[following-sibling::Bound[1]/Value/*[1]]')
    val2 = k.xpath('.//Measure//Data[following-sibling::Bound[2]/Value/*[1]]')
    if val1 != val2:
        print("val:",val1, "--", val1.sourceline, val2, "--", val2.sourceline)

Output i am getting :

val: Speed -- 13 Distance -- 21

Output i am expecting:

val: Speed -- 13 Distance -- 21
val: Time -- 42 Distance -- 50

I was printing lines when both or has different attribute as shown in snapshot

for some reason it's not printing for all element such as if its inside "<Value_on_condition>" in 'Setting_3' in xml So if its a long xml its not able to find measure and compare both Val1 and Val2

CodePudding user response：

The structure of the xml in this question is different from the one in your other question. To reflect that, change your for loop to this:

for k in doc2.xpath('//Value//Measure'):
    val1 = k.xpath('.//Bound[1]//Value/*')[0]
    val2 = k.xpath('.//Bound[2]//Value/*')[0]
    if val1.tag !=val2.tag:
        print(val1.tag,"--",val1.sourceline,val2.tag,"--",val2.sourceline)
   
    cond1 = k.xpath('.//Bound[1]//Condition/*')[0]
    cond2 = k.xpath('.//Bound[2]//Condition/*')[0]
    if cond1.tag !=cond2.tag:
        print(cond1.tag,"--",cond1.sourceline,val2.tag,"--",cond2.sourceline)

The output I get is

Speed -- 12 Distance -- 20
Time -- 41 Distance -- 49