Updated docs and import statements.

docs/source/installation.rst

@@ -14,7 +14,7 @@ From Pypy
 
 .. code-block:: console
 
-    pip install sen2chain
+    pip3 install sen2chain
 
 From sources
 ^^^^^^^^^^^^
@@ -23,8 +23,8 @@ From sources
 
     git clone git@framagit.org:jebins/sen2chain.git
     cd sen2chain
-    pip install -r requirements.txt
-    pip install -e .
+    pip3 install -r requirements.txt
+    pip3 install -e .
 
 
 Configuration
@@ -47,7 +47,7 @@ Hubs logins
 ^^^^^^^^^^^
 In order to dowload images, you need a login on the `PEPS <https://peps.cnes.fr/rocket/#/home/>`_  and `Scihub <https://scihub.copernicus.eu/dhus>`_ servers.
 
-* The PEPS login and password must be stored in ``~/sen2chain/config/peps.txt`` like so:
+* The PEPS login and password must be stored in ``~/sen2chain_data/config/peps.txt`` like so:
 
 .. code-block:: html
 

sen2chain/library.py

@@ -13,6 +13,7 @@ from datetime import datetime
 from typing import List, Set, Dict, Tuple, Optional
 
 from .config import Config, SHARED_DATA
+from .products import L1cProduct
 
 
 s2_tiles_index = SHARED_DATA.get("tiles_index")