phone.yml

---
da Boss:
  - Humberto Ortiz-Zuazaga:
    phone: ''
De Novo Sequencing Project:
  - Ivan Jimenez Ruiz:
    phone: ''
  - Israel Dilan Pantojas:
    phone: '7872414148'
SalHUD Project:
  - Roberto Arce Corretjer: #are there any other members???
    phone: ''
TCGAnalysis Project:
  - Cindy Frias Flores: #yeah I have to ask Humberto about the lab projects and who are their members
    phone: ''
Flows Project:
  - Bianca Colon Rosado:
    phone: ''
  - Grace Rodriguez:
    phone: ''

repl_output

[1] pry(main)> require 'yaml'
=> true
[2] pry(main)> phone_numbers = YAML.load_file('phone.yml')
=> {"da Boss"=>[{"Humberto Ortiz-Zuazaga"=>nil, "phone"=>""}],
 "De Novo Sequencing Project"=>
  [{"Ivan Jimenez Ruiz"=>nil, "phone"=>""},
   {"Israel Dilan Pantojas"=>nil, "phone"=>"7872414148"}],
 "SalHUD Project"=>[{"Roberto Arce Corretjer"=>nil, "phone"=>""}],
 "TCGAnalysis Project"=>[{"Cindy Frias Flores"=>nil, "phone"=>""}],
 "Flows Project"=>
  [{"Bianca Colon Rosado"=>nil, "phone"=>""},
   {"Grace Rodriguez"=>nil, "phone"=>""}]}
[3] pry(main)> phone_numbers.keys
=> ["da Boss",
 "De Novo Sequencing Project",
 "SalHUD Project",
 "TCGAnalysis Project",
 "Flows Project"]
[4] pry(main)> phone_numbers['De Novo Sequencing Project']
=> [{"Ivan Jimenez Ruiz"=>nil, "phone"=>""},
 {"Israel Dilan Pantojas"=>nil, "phone"=>"7872414148"}]