Babel>=1.3, <2.9 Flask-Babel>=0.11.1,<2.1.0 Flask-Login>=0.3.2,<0.5.1 Flask-Principal>=0.3.2,<0.5.1 singledispatch>=3.4.0.0,<3.5.0.0 backports_abc>=0.4 Flask>=1.0.2,<1.2.0 iso-639>=0.4.5,<0.5.0 PyPDF2==1.26.0,<1.27.0 pytz>=2016.10 requests>=2.11.1,<2.25.0 SQLAlchemy>=1.3.0,<1.4.0 tornado>=4.1,<6.2 Wand>=0.4.4,<0.7.0 unidecode>=0.04.19,<1.2.0