构建表达式

Question

我有以下代码，我试图通过'OR'ing项目和分支列表组合来构建表达式...我写了大部分代码......我需要关于如何创建该表达式中，我有更好的理解样品的输入和预期输出

''' 
projects.txt 
platform/vendor/pro/code 
platform/vendor/source/data 
external/gps/data 

EXPECTED OUTPUT:- 
project:platform/vendor/pro/code branch:ab_mr1 OR project:platform/vendor/source/data branch:b_ar2 OR external/gps/data branch:c_ar3 

''' 
def getbranch_project (project): 
    if project == "platform/vendor/pro/code" : 
     branch = 'ab_mr1' 

    if project == "platform/vendor/source/data" : 
     branch = 'b_ar2' 

    if project == "external/gps/data" : 
     branch = 'c_ar3' 

    return branch 

def main(): 

    with open('projects.txt','r') as f : 
     for line in f : 
      project = line.strip() 
      branch = getbranch_project(project) 
      print "PROJECT:" + project 
      print "BRANCH: " + branch 
      #project_branch_list 

    print project_branch_list 

if __name__ == '__main__': 
     main() 

Answer 1

" OR ".join(["%s branch:%s"%(line.strip(),getbranch_project(line.strip())) for line in f])