/lib/udev/rules.d/60-python-trezor.rules is in python-trezor 0.6.10-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # TREZOR: The Hardware Bitcoin Wallet
# http://bitcointrezor.com/
# TREZOR
SUBSYSTEM=="usb", ATTR{idVendor}=="534c", ATTR{idProduct}=="0001", MODE:="0666", GROUP="dialout", SYMLINK+="trezor%n"
# TREZOR Raspberry Pi Shield
SUBSYSTEM=="usb", ATTR{idVendor}=="10c4", ATTR{idProduct}=="ea80", MODE:="0666", GROUP="dialout", SYMLINK+="trezor%n"
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