Ujson requires python 3.6 or greater version

[santoshgadagamma]

Hello,

I am trying to use python bitcoin tools 0.2.3 package but it shows errors while installing i got the below error.

But in the requirement package of source contains there packages - ecdsa
python-bitcoinlib
base58
qrcode
Pillow
plyvel
matplotlib
numpy
ujson

Error:
C:\Users\rvst sateesh\Downloads>pip install python-bitcoin-tools
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upgrade your Python as Python 2.7 is no longer maintained.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 s
upport for Python 2.7 in January 2021. More details about Python 2 support in pi
p can be found at https://pip.pypa.io/en/latest/development/release-process/#pyt
hon-2-support pip 21.0 will remove support for this functionality.
Collecting python-bitcoin-tools
Using cached python_bitcoin_tools-0.2.3-py2-none-any.whl (54 kB)
Requirement already satisfied: ecdsa in c:\python27\lib\site-packages (from pyth
on-bitcoin-tools) (0.13.3)
Requirement already satisfied: Pillow in c:\python27\lib\site-packages (from pyt
hon-bitcoin-tools) (6.2.2)
Requirement already satisfied: qrcode in c:\python27\lib\site-packages (from pyt
hon-bitcoin-tools) (6.1)
Requirement already satisfied: base58 in c:\python27\lib\site-packages (from pyt
hon-bitcoin-tools) (1.0.3)
Collecting matplotlib
Using cached matplotlib-2.2.5-cp27-cp27m-win_amd64.whl (8.7 MB)
Collecting python-bitcoinlib
Using cached python-bitcoinlib-0.11.0.tar.gz (150 kB)
Requirement already satisfied: numpy in c:\python27\lib\site-packages (from pyth
on-bitcoin-tools) (1.16.6)
Collecting plyvel
Using cached plyvel-1.3.0.tar.gz (149 kB)
Collecting ujson
Using cached ujson-2.0.3.tar.gz (7.1 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Installing backend dependencies ... done
Preparing wheel metadata ... done
Requirement already satisfied: six in c:\python27\lib\site-packages (from qrcode
->python-bitcoin-tools) (1.15.0)
Requirement already satisfied: colorama; platform_system == "Windows" in c:\pyth
on27\lib\site-packages (from qrcode->python-bitcoin-tools) (0.4.4)
Collecting cycler>=0.10
Using cached cycler-0.10.0-py2.py3-none-any.whl (6.5 kB)
Requirement already satisfied: pytz in c:\python27\lib\site-packages (from matpl
otlib->python-bitcoin-tools) (2020.5)
Collecting kiwisolver>=1.0.1
Using cached kiwisolver-1.1.0-cp27-none-win_amd64.whl (64 kB)
Requirement already satisfied: python-dateutil>=2.1 in c:\python27\lib\site-pack
ages (from matplotlib->python-bitcoin-tools) (2.8.0)
Requirement already satisfied: backports.functools-lru-cache in c:\python27\lib
site-packages (from matplotlib->python-bitcoin-tools) (1.6.1)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 in c:\py
thon27\lib\site-packages (from matplotlib->python-bitcoin-tools) (2.4.7)
Requirement already satisfied: setuptools in c:\python27\lib\site-packages (from
kiwisolver>=1.0.1->matplotlib->python-bitcoin-tools) (41.2.0)
Using legacy 'setup.py install' for python-bitcoinlib, since package 'wheel' is
not installed.
Using legacy 'setup.py install' for plyvel, since package 'wheel' is not install
ed.
Building wheels for collected packages: ujson
Building wheel for ujson (PEP 517) ... error
ERROR: Command errored out with exit status 1:
command: 'c:\python27\python.exe' 'c:\python27\lib\site-packages\pip_vendor
pep517_in_process.py' build_wheel 'c:\users\rvstsa1\appdata\local\temp\tmpok2q
zs'
cwd: c:\users\rvstsa1\appdata\local\temp\pip-install-kryqze\ujson
Complete output (42 lines):
running bdist_wheel
running build
running build_ext
building 'ujson' extension
creating build
creating build\temp.win-amd64-2.7
creating build\temp.win-amd64-2.7\Release
creating build\temp.win-amd64-2.7\Release\deps
creating build\temp.win-amd64-2.7\Release\deps\double-conversion
creating build\temp.win-amd64-2.7\Release\deps\double-conversion\double-conver
sion
creating build\temp.win-amd64-2.7\Release\lib
creating build\temp.win-amd64-2.7\Release\python
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\bignum-dtoa.cc /Fobuild
temp.win-amd64-2.7\Release./deps/double-conversion/double-conversion\bignum-dto
a.obj -D_GNU_SOURCE
bignum-dtoa.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\bignum.cc /Fobuild\temp.
win-amd64-2.7\Release./deps/double-conversion/double-conversion\bignum.obj -D_G
NU_SOURCE
bignum.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\cached-powers.cc /Fobuil
d\temp.win-amd64-2.7\Release./deps/double-conversion/double-conversion\cached-p
owers.obj -D_GNU_SOURCE
cached-powers.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\diy-fp.cc /Fobuild\temp.
win-amd64-2.7\Release./deps/double-conversion/double-conversion\diy-fp.obj -D_G
NU_SOURCE
diy-fp.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\double-conversion.cc /Fo
build\temp.win-amd64-2.7\Release./deps/double-conversion/double-conversion\doub
le-conversion.obj -D_GNU_SOURCE
double-conversion.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\fast-dtoa.cc /Fobuild\te
mp.win-amd64-2.7\Release./deps/double-conversion/double-conversion\fast-dtoa.ob
j -D_GNU_SOURCE
fast-dtoa.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\fixed-dtoa.cc /Fobuild\t
emp.win-amd64-2.7\Release./deps/double-conversion/double-conversion\fixed-dtoa.
obj -D_GNU_SOURCE
fixed-dtoa.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./deps/double-conversion/double-conversion\strtod.cc /Fobuild\temp.
win-amd64-2.7\Release./deps/double-conversion/double-conversion\strtod.obj -D_G
NU_SOURCE
strtod.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tp./lib/dconv_wrapper.cc /Fobuild\temp.win-amd64-2.7\Release./lib/dc
onv_wrapper.obj -D_GNU_SOURCE
dconv_wrapper.cc
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tc./python/ujson.c /Fobuild\temp.win-amd64-2.7\Release./python/ujson
.obj -D_GNU_SOURCE
ujson.c
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tc./python/objToJSON.c /Fobuild\temp.win-amd64-2.7\Release./python/o
bjToJSON.obj -D_GNU_SOURCE
objToJSON.c
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tc./python/JSONtoObj.c /Fobuild\temp.win-amd64-2.7\Release./python/J
SONtoObj.obj -D_GNU_SOURCE
JSONtoObj.c
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tc./lib/ultrajsonenc.c /Fobuild\temp.win-amd64-2.7\Release./lib/ultr
ajsonenc.obj -D_GNU_SOURCE
ultrajsonenc.c
C:\Users\rvst sateesh\AppData\Local\Programs\Common\Microsoft\Visual C++ for P
ython\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I./python -I
./lib -I./deps/double-conversion/double-conversion -Ic:\python27\include -Ic:\py
thon27\PC /Tc./lib/ultrajsondec.c /Fobuild\temp.win-amd64-2.7\Release./lib/ultr
ajsondec.obj -D_GNU_SOURCE
ultrajsondec.c
./lib/ultrajsondec.c(47) : fatal error C1083: Cannot open include file: 'stdin
t.h': No such file or directory
error: command 'C:\Users\rvst sateesh\AppData\Local\Programs\Common\Mic
rosoft\Visual C++ for Python\9.0\VC\Bin\amd64\cl.exe' failed with exit sta
tus 2

ERROR: Failed building wheel for ujson
Failed to build ujson
ERROR: Could not build wheels for ujson which use PEP 517 and cannot be installed directly.

Every package which are mentioned in the requirement is installed properly except ujson and plyvel. Ujson rewuired greater version How to overcome these errors.