How will you delete a column in a pandas DataFrame? {"deviceType":"mobile"} .tradein-instant-savings-launch-wrapper{margin-bottom:22px}.tradein-instant-savings-launch-button{overflow:hidden;border:1px solid #009502!important;background-image:linear-gradient(#fff,#f7f8fa 1px,#e7e9ec);box-shadow:0 1px rgba(0,0,0,.125);width:100%;margin:0!important}.tradein-instant-savings-launch-button .a-button-text{white-space:normal;text-align:left!important;color:#000!important;font-size:.9em;height:auto}.tradein-instant-savings-launch-button .a-button-inner{background:0 0!important;box-shadow:none!important;height:auto}.tradein-wrapper{padding-bottom:80px}.tradein-wrapper a{text-decoration:none!important}.tradein-wrapper .tradein-header{background-color:#f3f3f3}.tradein-wrapper .tradein-header .search-wrapper{width:100%;margin:0 auto;padding-bottom:10px}.refinement-selection-view .refinement-search-form-wrapper{width:100%;margin:0 auto;padding-bottom:10px}.refinement-selection-view .refinement-search-form{display:inline-flex;position:relative;width:100%}.refinement-selection-view .refinement-search-form .refinement-search-input{width:100%;border-radius:3px 0 0 3px;box-shadow:none}.tradein-wrapper .tradein-successful-view .tradein-header{border-bottom:1px solid #DDD}.tradein-wrapper .review-header{border-bottom:4px solid #DDD}.tradein-autocomplete-dropdown-menu{display:none;position:absolute;z-index:1010;background-color:#FFF;border:2px solid #eee;padding:5px;max-height:160px;overflow-y:auto}.tradein-autocomplete-dropdown-menu .autocomplete-suggestion{padding:5px 0}.tradein-wrapper .count-value-header,.tradein-wrapper .search-result-wrapper{display:none}.tradein-wrapper .search-form .mobile-search-submit{position:absolute;left:-9999px;width:1px;height:1px}.tradein-wrapper .search-results-info{border-bottom:1px solid #DDD}.tradein-wrapper .search-scrolling-wrapper{position:relative;min-height:150px}.tradein-wrapper .secondary-header{border-top:1px solid #DDD;border-bottom:1px solid #DDD}.tradein-wrapper .selectable-wrapper .secondary-header{text-transform:uppercase}.tradein-wrapper .tradein-question-wrapper{padding:10px 0!important}.tradein-wrapper .conditions-question-list{margin-right:2rem}.tradein-wrapper .tradein-question-choice-list{text-align:left;height:48px}.tradein-wrapper .tradein-question-choice-list .button-question{margin:0}.tradein-wrapper .tradein-question{margin-top:20px;list-style-position:inside;color:#000!important}.tradein-wrapper .tradein-question .question-text{display:inline}.tradein-wrapper .tradein-question .appraisal-wrapper{padding:0!important}.tradein-wrapper .tradein-eligible-item{width:100%}.tradein-wrapper .appraisal-text span,.tradein-wrapper .tradein-item-info span{display:block}.tradein-wrapper .appraisal-text .adjusted-pricing,.tradein-wrapper .appraisal-text .adjusted-pricing span,.tradein-wrapper .tradein-item-info .confirmation-actions span,.tradein-wrapper .tradein-item-info .item-title 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.active{display:block}.tradein-templates{display:none;visibility:hidden}.tradein-wrapper .selectedItemInfo{border-top:1px solid #DDD;border-bottom:1px solid #DDD}.tradein-wrapper .trade-summary{border-left:1px solid #DDD}.tradein-wrapper .paid-breakdown-wrapper{width:100%;display:none}.tradein-wrapper .paid-breakdown{padding-top:0!important}.tradein-wrapper .paid-breakdown-wrapper hr{margin:10px 0}.tradein-wrapper .paid-amount{text-align:right}.tradein-wrapper .promo-applied{display:block;font-weight:400}.tradein-wrapper .tradein-search-result-list{max-height:300px;overflow-y:auto}.tradein-wrapper .gift-card-wrapper{padding-top:0!important;padding-bottom:0!important}.tradein-wrapper .no-eligible-items{padding:80px 40px;display:none}.tradein-wrapper .logged-out-message,.tradein-wrapper.logged-out-message{padding:80px 40px;border-top:1px solid #DDD}.tradein-wrapper .tradein-footer{background-color:#FAFAFA;box-shadow:0 -1px 1px 1px #DDD;position:fixed;bottom:0;width:100%}.tradein-wrapper 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a{display:inline-block;margin-left:15px;text-decoration:none}.tradein-wrapper .tradein-mobile-general-error{width:234px;margin:50px auto 0;background:url(https://images-na.ssl-images-amazon.com/images/G/01/ember/restaurants/assets/winston._V526245152_.jpg) no-repeat 0 90px;height:400px}.tradein-error-alert .a-alert-content{color:#c40000}.tradein-warning-alert .a-alert-content{color:#8c6e00}.tradein-error-alert .a-alert-content,.tradein-warning-alert .a-alert-content{font-weight:700}.tradein-error-alert p,.tradein-warning-alert p{color:#000}.tradein-wrapper .asin-selection-tradein-loading-spinner,.tradein-wrapper .tradein-loading-spinner,.tradein-wrapper .tradein-search-loading-spinner{display:block;position:absolute;top:0;left:0;background-color:#FFF;display:none;width:100%;height:100%;opacity:.8;z-index:30;border-radius:4px}.tradein-wrapper .asin-selection-tradein-loading-spinner.active,.tradein-wrapper .tradein-loading-spinner.active,.tradein-wrapper .tradein-search-loading-spinner.active{display:block!important}.tradein-promo-preview-wrapper{padding:10px;border:1px solid #009502;border-radius:3px;text-align:center;margin:20px}.tradein-promo-preview-wrapper .promo-row{color:#009502}.tradein-wrapper #editReturnAddress{text-decoration:none}.tradein-popover-address-container{max-height:200px;overflow-y:auto}.tradein-wrapper .non-promo-text{display:none}.simple-card-view-image{width:70px;height:70px;max-height:75px}.submit-refinement{width:90%}.vertical-card-view-container{box-shadow:-4px 0 5px rgba(0,0,0,.25)}.tradein-cart-header-container{box-shadow:0 0 0 5px #e5e5e5;padding-top:10px;padding-bottom:10px}.tradein-cart-view-review-text{box-shadow:0 2px 0 4px #e5e5e5;padding:20px 15px}.tradein-cart-view{box-shadow:0 6px 0 0 #e5e5e5;padding-bottom:20px}.tradein-cart-promo-view{box-shadow:0 4px 0 2px #e5e5e5;padding:10px 15px}#tradeInMultiItemOffer{padding:1em 1em}.offer-confirmation-subtext{font-size:13px}#asin-selection-wrapper 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li{display:inline-block;width:45%;font-size:15px;padding-right:15px}.tradein-progress-bar{width:20%}.tradein-progress-bar{max-width:130px!important;margin:auto;width:50%}.progress-bar{border-radius:60px;overflow:hidden;width:100%}.progress-bar span{display:block}.refinement-selection-view{margin:20px 0}.bar{background:rgba(0,0,0,.1)}.progress{animation:forwards 8s ease infinite;background:#75b800;color:#fff;padding:5px;width:0}.progress-bar{left:50%;max-width:50%;position:absolute;transform:translate3d(-50%,-50%,0)}.whats-next-title{font-size:19px;margin-bottom:20px;display:block}.vertical-card-content-details{padding-right:7px}.next-steps-secondary{font-size:13px}.next-steps-title{font-size:14px}.next-step-right-container{padding-left:10px}#categoryHelperTitle{text-transform:lowercase}.unavailable-item img,.unavailable-offer{opacity:.4}.shipment-content{font-size:13px}.termsAndAgreementContent{font-size:14px}#submitTradeInButtonAgreementText{font-size:13px;margin-bottom:20px}.marginless-divider{margin-bottom:0}#addressLineFormalTemplate span{font-size:11px}.previous-button{font-size:13px}#previousButtonArrow{font-size:8px}.continue-trigger .a-button-inner .a-button-text,.handle-review-your-tradein .a-button-inner .a-button-text,.handle-submit-your-tradein .a-button-inner .a-button-text,.handle-trade-in-more-items .a-button-inner .a-button-text,.previous-button .a-button-inner .a-button-text,.return-to-shopping .a-button-inner .a-button-text,.submit-refinement .a-button-inner .a-button-text{font-size:1.5rem}.check-icon{padding-top:8px}.confirmation-total-tiv,.total-tradein-confirmation-title{font-size:16px}#submitTradeInInstructionText{font-size:14px;line-height:1.7em;padding-left:10px;padding-right:25px;margin-left:15px}.tradein-offer-content{font-size:13px}.shipment-content-item{margin-bottom:10px}.submit-trade-in-terms-container{margin-bottom:5px}.seeHowItWorksPopover a{text-decoration:none!important}@media only screen and (max-height:568px){.tradein-instant-savings-launch-button .a-button-text{padding:1.2rem 1.4rem;font-size:14px!important}.seeHowItWorksPopover{font-size:12px;max-height:400px;overflow-y:auto}}@media only screen and (min-height:500px) and (orientation:portrait){.tradein-wrapper{padding-bottom:110px}.tradein-wrapper .conditions-question-list,.tradein-wrapper .selectable-wrapper,.tradein-wrapper .tradein-confirmation-item-list,.tradein-wrapper .tradein-search-result-list{max-height:300px;overflow-y:auto}}@media only screen and 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