[Python] Import Error: paho.mqtt.client not found

I am creating a docker containing python and php. I am writing a python script to connect to a MQTT broker residing in another docker.

In my dockerfile I ensure that I install the paho client by using the following commands:

RUN apt-get install -y python3-dev
RUN apt-get install -y libffi-dev
RUN apt-get install -y libssl-dev

ADD https://bootstrap.pypa.io/get-pip.py /tmp/get-pip.py
RUN cat /tmp/get-pip.py | python3
RUN pip install paho-mqtt
RUN pip install python-etcd


However when I run the python script I get the following error:

ImportError: No module named paho.mqtt.client


The docker installation does not show any error with regards to paho-mqtt installation. It will be great if someone can guide on this.

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