So, it’s been almost a year since I’ve posted something, and it’s been a busy year.<\/p>\n
ERATE twice, pushing my CCIE recert to the edge of losing it (23 days left in suspension when I passed), getting married to my best friend (Halloween if anyone is wondering), and yes still working to learn python.<\/p>\n
One of my personal projects was a script that used FFMPEG to convert media files to X.265.
\nWhile I was doing this, I stumbled upon what appears to be a common…question? oddity? something anyway.<\/p>\n
Look Before You Leap LBYL<\/a> or Easier to Ask For Permission EAFP<\/a><\/p>\n Basically when you are getting ready to do something: In my case, I was attempting to write a script that could take the base directory having the files in it directly, like: As I’m lazy, I don’t want to have two scripts to do this, or to have to modify code each time.<\/p>\n So the first thing I did was use split to create a list.(ok technically the second thing I did, as the first thing was to create a list of files that matched my criteria)<\/p>\n When the base is \/Movies we only have line[0] = filename Now that I have a list, I tried to check if element [1] exists<\/p>\n and if there was something there, it worked!! Really? There is an else statement following…if it wasn’t true why didn’t it continue to the else? Once I did this:<\/p>\n It actually worked!<\/p>\n Now, I still don’t fully understand why LBYL didn’t work, but a lot of code I found while searching for an answer seemed to follow EAFP using try\/except method.<\/p>\n","protected":false},"excerpt":{"rendered":" So, it’s been almost a year since I’ve posted something, and it’s been a busy year. ERATE twice, pushing my CCIE recert to the edge of losing it (23 days left in suspension when I passed), getting married to my best friend (Halloween if anyone is wondering), and yes still working to learn python. One … Continue reading “LBYL vs EAFP”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[21,29,34,38],"class_list":["post-323","post","type-post","status-publish","format-standard","hentry","category-python","tag-eafp","tag-lbyl","tag-python","tag-scripting"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=\/wp\/v2\/posts\/323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=323"}],"version-history":[{"count":0,"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=\/wp\/v2\/posts\/323\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=323"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.wifijanitor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nDo you check if a value\/key is there first?
\nor
\nDo you just “try” and if it fails catch an “except” and do something else?<\/p>\n
\n\/Movies\/
\nor have the file in a folder like:
\n\/TV\/Constantine\/
\nAnd expect to have “Season” folders<\/p>\nwith open(found, 'rt') as shows:\nfor row in shows:\nline = row.rstrip().split('\/')\n<\/code><\/pre>\n
\nWhen the base is \/TV\/Constantine\/ we have line[0] = Season and line[1] = filename<\/p>\nif len(line[1]) >= 1:\n<\/code><\/pre>\n
\nif there isn’t anything there, it errors out….<\/p>\n
\nafter trying different things to make this work, and not being able too, I found a reference to<\/p>\ntry:\nif len(line[1]) >= 1:\n<\/code><\/pre>\n