Get Dynamiclly loaded Source Code from python using mechanize and bs4

Question

I want to get source code of page that loads from javascript actually that page is linkedin profile page and i want to get job and education details.

I'm not using selenium i don't want browser window to open i know about headless but cookies problem

I have logedin through mechanize and i have get some data like phone number, address, headlines, emails, and Full Name. But as it is loaded from javascript so i can't get whole page data.

Data getting:

.....<code id="bpr-guid-892585" style="display: none">
  {"data":{"entityUrn":"urn:li:collectionResponse:uPYuDSPXzooiHx+zPOguG1+f+JFMWTWFEfhiIQtEFMM=","elements":[],"paging":{"count":10,"start":0,"total":0,"links":[]},"$type":"com.linkedin.restli.common.CollectionResponse"},"included":[]}
</code>
<code id="datalet-bpr-guid-892585" style="display: none">
  {"request":"/voyager/api/takeovers","status":200,"body":"bpr-guid-892585","method":"GET","headers":{"x-li-uuid":"AAXafRyXk/WxvhRuOZTrnA\u003D\u003D"}}
</code>
<img class="datalet-bpr-guid-892585" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" style="display: none"/><code id="bpr-guid-892586" style="display: none">
  {"data":{"entityUrn":"urn:li:collectionResponse:nZx6/1e1AAbOHh075gv083zrunZT186/K+rx5FP70A4=","elements":[{"lixTracking":{"urn":"urn:li:member:865882626","segmentIndex":2,"experimentId":4358724,"treatmentIndex":1,"$type":"com.linkedin.voyager.common.ChameleonConfigLixTrackingInfo"},"data":{"namespace":"premium/templates/components/chooser/plan-card","locale":"en_US","message":"Learn more","key":"i18n_card_select_plan","$type":"com.linkedin.voyager.common.ChameleonConfigDataI18n"},"displayName":"card_select_plan","description":"testing 'Learn more' on SKU cards, vs control of 'Select plan' ","lixTreatment":"VAR_t20152_PR_1","lixKey":"chameleon.PREMIUM:us.copy.17654","creatorDisplayName":"cyount","status":"PERMANENT_RAMP","$type":"com.linkedin.voyager.common.ChameleonConfigItem"},{"lixTracking":{"urn":"urn:li:member:865882626","segmentIndex":3,"experimentId":4395729,"treatmentIndex":0,"$type":"com.linkedin.voyager.common.ChameleonConfigLixTrackingInfo"},"data":{"namespace":"onboarding/templates/components/widgets/people-you-may-know","locale":"en_US","message":"Connecting with people lets you see updates and keep in touch","key":"i18n_onboarding_pymk_page_header_phase_3","$type":"com.linkedin.voyager.common.ChameleonConfigDataI18n"},"displayName":"onboarding_pymk_page_header_phase_3","description":"Onboarding PEOPLE_YOU_MAY_KNOW widget header copy test","lixTreatment":"control","lixKey":"chameleon.ONBOARDING:global.copy.19060","creatorDisplayName":"zihliu","status":"MAX_RAMP","$type":"com.linkedin.voyager.common.ChameleonConfigItem"},{"lixTracking":{"urn":"urn:li:member:865882626","segmentIndex":3,"experimentId":4395707,"treatmentIndex":1,"$type":"com.linkedin.voyager.common.ChameleonConfigLixTrackingInfo"},"data":{"namespace":"onboarding/templates/components/widgets/profile-edit-common","locale":"en_US","message":"What’s your most recent experience?","key":"i18n_onboarding_profile_edit_work_header_v2","$type":"com.linkedin.voyager.common.ChameleonConfigDataI18n"},"displayName":"onboarding_profile_edit_work_header_v2","description":"Onboarding PROFILE_EDIT widget header copy test","lixTreatment":"VAR_t21697_PR_1","lixKey":"chameleon.ONBOARDING:global.copy.19063","$recipeTypes":["com.linkedin.voyager.dash.deco.relationships.ProfileWithEmailRequired","com.linkedin.voyager.dash.deco.identity.profile.WebTopCardCore"],"$type":"com.linkedin.voyager.dash.identity.profile.Profile","firstName":"Adarsh ","profilePicture":{"displayImageWithFrameReferenceUnion":{"vectorImage":{"$recipeTypes":["com.linkedin.voyager.dash.deco.common.VectorImageOnlyRootUrlAndAttribution"],"rootUrl":"https://media-exp1.licdn.com/dms/image/C4E35AQEIVkoUWgLFvw/profile-framedphoto-shrink_","artifacts":[{"width":200,"$recipeTypes":["com.linkedin.voyager.dash.deco.common.VectorArtifact"],"fileIdentifyingUrlPathSegment":"200_200/0/1597096649541?e=1647694800&amp;v=beta&amp;t=XVOK0upwO6V3NaJtUWLwy-yLMDa8cZICzYH0do67vhU","expiresAt":1647694800000,"height":200,"$type":"com.linkedin.common.VectorArtifact"},{"width":400,"$recipeTypes":["com.linkedin.voyager.dash.deco.common.VectorArtifact"],"fileIdentif
</code>
<img class="terminatorlet" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" style="display: none"/>
<div aria-live="polite" class="visually-hidden" id="a11y-notification" role="region"></div>
</body></html>

And also if there is way by using of selenium then please guide me but using headless attribute.

It contains all data that i mentiond above but when loaded from browser after login it's different.

Thanks for any help.