How to copy first file to first host, second file to second host and so on via ansible?

I have 10 hosts and 10 files. I want to copy one of 10 files to corresponding host:

> 1_file.txt -> 1_host
>
> 2_file.txt -> 2_host
>
> ...
>
> 10_file.txt -> 10_host

I've tried to do it with zip filter, like

- name: Copy splitted files to instances
  copy:
    src: "{{ item.0 }}"
    dest: "{{ remote_ips_file }}"
  delegate_to: "{{ item.1 }}"
  loop: "{{ splitted_files.files | zip(instances) | list }}"

but got an error:

 {"msg": "Unexpected failure during module execution.", "stdout": ""}

Another way (from ChatGPT) was:

- name: Copy files to hosts
  hosts: "{{ hosts }}"
  tasks:
  - name: Copy file to host
    copy:
      src: "{{ item.0 }}"
      dest: "/tmp/{{ item.1 }}"
    loop: "{{ zip(files, hosts) }}"

vars:
  files: ['/path/to/file1', '/path/to/file2']
  hosts: ['host1', 'host2']

But also got an error:

zip is undefined

How to do it with proper way?

Edit
I've found workaround, but it works not in parallel:

- name: Copy splitted files to instances
  copy:
    src: "{{ item.0.path }}"
    dest: "{{ remote_ips_file }}"
  delegate_to: "{{ item.1 }}"
  with_together:
    - "{{ splitted_files.files }}"
    - "{{groups['all']}}"

Given the lists

  my_files: [file1, file2]
  my_hosts: [host1, host2]

Create the dictionary

  hosts_files: "{{ dict(my_hosts|zip(my_files)) }}"

gives

  hosts_files:
    host1: file1
    host2: file2

Use the dictionary in the task

    - copy:
        src: "{{ hosts_files[inventory_hostname] }}"
        dest: /tmp

<hr>

<sup>

Example of a complete project for testing

shell> tree .
.
├── ansible.cfg
├── files
│   ├── file1
│   └── file2
├── hosts
└── pb.yml

1 directory, 5 files

shell> cat ansible.cfg 
[defaults]
gathering = explicit
collections_path = $HOME/.local/lib/python3.9/site-packages/
inventory = $PWD/hosts
roles_path = $PWD/roles
remote_tmp = ~/.ansible/tmp
retry_files_enabled = false
stdout_callback = yaml

shell> cat hosts
[test]
host1 ansible_host=10.1.0.61
host2 ansible_host=10.1.0.63

[test:vars]
ansible_connection=ssh
ansible_user=admin
ansible_become=yes
ansible_become_user=root
ansible_become_method=sudo
ansible_python_interpreter=/usr/local/bin/python3.8
ansible_perl_interpreter=/usr/local/bin/perl

shell> cat pb.yml 
- hosts: host1,host2

  vars:

    my_files: [file1, file2]
    my_hosts: [host1, host2]

    hosts_files: "{{ dict(my_hosts|zip(my_files)) }}"

  tasks:

    - debug:
        var: hosts_files
      run_once: true

    - copy:
        src: "{{ hosts_files[inventory_hostname] }}"
        dest: /tmp

shell> ansible-playbook pb.yml 

PLAY [host1,host2] ***************************************************************************

TASK [debug] *********************************************************************************
ok: [host1] => 
  hosts_files:
    host1: file1
    host2: file2

TASK 点击复制 **********************************************************************************
changed: [host1]
changed: [host2]

PLAY RECAP ***********************************************************************************
host1: ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
host2: ok=1    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

shell> ssh admin@10.1.0.61 ls -1 /tmp/file1
/tmp/file1

shell> ssh admin@10.1.0.63 ls -1 /tmp/file2
/tmp/file2

</sup>