{"id":1576,"date":"2020-04-12T08:48:23","date_gmt":"2020-04-12T13:48:23","guid":{"rendered":"http:\/\/blog.ls-al.com\/?p=1576"},"modified":"2020-04-12T11:52:32","modified_gmt":"2020-04-12T16:52:32","slug":"python-scan-text-block-reverse","status":"publish","type":"post","link":"https:\/\/blog.ls-al.com\/python-scan-text-block-reverse\/","title":{"rendered":"python-scan-text-block-reverse"},"content":{"rendered":"<h1>example finding a block.<\/h1>\n<p>start string and reverse search up to next string.  then replacing a line inside the block<\/p>\n<h2>python example<\/h2>\n<pre><code class=\"language-python\">#!\/usr\/bin\/python\nimport re\nimport sys\n\n#v0.9.6\nfileName=\"listener_test.yml\"\ndir=\".\/unregister\"\nvariable=\"bar\"\nblock_start='CodeUri: ' + dir\nblock_end='AWS::Serverless::Function'\nrtext = '      AutoPublishCodeSha256: ' + variable + '\\n'\n\nwith open(\"listener_test.yml\") as ofile:\n      lines=ofile.readlines()\n      i = len(lines) - 1\n      AWSFound = False\n      CodeUriFound = False\n      AutoFound = False\n      unum = 0\n      while i >= 0 and not AWSFound:\n           if block_start in lines[i]:\n             CodeUriFound = True\n             unum = i\n           if \"AutoPublishCodeSha256:\" in lines[i]:\n             AutoFound = True\n             unum = i\n           if block_end in lines[i] and CodeUriFound:\n             AWSFound = True\n\n           i -= 1\n\nif AutoFound:\n  lines[unum] = rtext\nelse:\n  lines.insert(unum - 1, rtext)\n\nwith open('listener_test_new.yml', 'w') as file:\n  lines = \"\".join(lines)\n  file.write(lines)\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>example finding a block. start string and reverse search up to next string. then replacing a line inside the block<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-1576","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/comments?post=1576"}],"version-history":[{"count":0,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1576\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/media?parent=1576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/categories?post=1576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/tags?post=1576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}