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nyd@MacBook-Air-Sergey ~ % pip install esptool
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: esptool in ./Library/Python/2.7/lib/python/site-packages (3.0)
Requirement already satisfied: reedsolo<=1.5.4,>=1.5.3 in ./Library/Python/2.7/lib/python/site-packages (from esptool) (1.5.4)
Requirement already satisfied: ecdsa>=0.16.0 in ./Library/Python/2.7/lib/python/site-packages (from esptool) (0.16.1)
Requirement already satisfied: cryptography>=2.1.4 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from esptool) (2.6.1)
Requirement already satisfied: pyserial>=3.0 in ./Library/Python/2.7/lib/python/site-packages (from esptool) (3.5)
Requirement already satisfied: bitstring>=3.1.6 in ./Library/Python/2.7/lib/python/site-packages (from esptool) (3.1.7)
Requirement already satisfied: six>=1.9.0 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from ecdsa>=0.16.0->esptool) (1.12.0)
Requirement already satisfied: asn1crypto>=0.21.0 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from cryptography>=2.1.4->esptool) (0.24.0)
Requirement already satisfied: cffi!=1.11.3,>=1.8 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from cryptography>=2.1.4->esptool) (1.14.3)
Requirement already satisfied: enum34 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from cryptography>=2.1.4->esptool) (1.1.6)
Requirement already satisfied: ipaddress in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from cryptography>=2.1.4->esptool) (1.0.22)
Requirement already satisfied: pycparser in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from cffi!=1.11.3,>=1.8->cryptography>=2.1.4->esptool) (2.19)
nyd@MacBook-Air-Sergey ~ % esptool
zsh: command not found: esptool