pulp optimization problem,not getting expected output.

[pallavi@76]

|project|loc_Bangalore|loc_Pune|cat_s|cat_c|
|:------|:-----------:|:------:|:---:| ---:|
|abc    |1            |0       |0    |1    |
|Sys    |1            |0       |0    |1    |
|Syst   |0            |1       |1    |0    |
|EPS    |1            |0       |0    |1    |
|foss   |1            |0       |0    |1    |
|opc    |0            |1       |1    |0    |

> want list of projects,which should satisfy below condition:
   
 1. count of project related to loc_Bangalore <=3
 2. count of project related to loc_pune <=2
 3. count of project related to cat_c <=4
 4. count of project related to cat_s <=1
 5. total project selected <=5(final condition).

> whatever project will come in output it should fullfill all 5 condition.

I tried soe code:
 but not getting expected result.

    prob = LpProblem("choose project")
    project_list = list(df['project'])
    banglore = dict(zip(project_list,df['loc_Bangalore']))
    pune = dict(zip(project_list,df['loc_Pune']))
    c = dict(zip(project_list,df['cat_C']))
    s = dict(zip(project_list,df['cat_S']))
    proj_vars = pulp.LpVariable.dicts("project",project_list,cat='Binary')
    no_of_project_choose = 5
    prob += pulp.lpSum([banglore[f] * proj_vars[f] for f in project_list]) <= 3
    prob += pulp.lpSum([pune[f] * proj_vars[f] for f in project_list]) <=2
    prob += pulp.lpSum([c[f]  * proj_vars[f] for f in project_list]) <=4
    prob += pulp.lpSum([s[f]  * proj_vars[f] for f in project_list]) <=1
    prob += pulp.lpSum([[banglore[f] * proj_vars[f] for f in project_list]+[pune[f] * proj_vars[f] for f in project_list]+
         [c[f]  * proj_vars[f] for f in project_list]+[s[f]  * proj_vars[f] for f in project_list]]) <=5
    prob.solve()

> output:   abc 0.0,   sys 0.0,   syst None,   EPS 0.0 ,  foss 0.0 ,  opc
> None(i am getting all project with 0 or some number line abc 9)

Pls help me in solving this.I want only project which satisfy other condition also(like banglore, pune,c and s).
is there anyother way of solving this?
i m not sue about my solution and way of solving.plz help.

[kgf]

I think you are trying to use 
  https://pypi.org/project/PuLP/

A python package for Linear programming. This is a list for PULP Platform, a RISC-V based open source hardware platform.