Une fois mais pas deux

Pipfile

+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+
+[packages]
+django = "*"
+psycopg2 = "*"
+
+[requires]
+python_version = "3.6"

Pipfile.lock

+{
+    "_meta": {
+        "hash": {
+            "sha256": "2dac5657edfcf65d9986585b5fda12524bd7a14c3130589964593ad1605d8b51"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.6"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "django": {
+            "hashes": [
+                "sha256:6fcc3cbd55b16f9a01f37de8bcbe286e0ea22e87096557f1511051780338eaea",
+                "sha256:bb407d0bb46395ca1241f829f5bd03f7e482f97f7d1936e26e98dacb201ed4ec"
+            ],
+            "index": "pypi",
+            "version": "==2.2.1"
+        },
+        "psycopg2": {
+            "hashes": [
+                "sha256:00cfecb3f3db6eb76dcc763e71777da56d12b6d61db6a2c6ccbbb0bff5421f8f",
+                "sha256:076501fc24ae13b2609ba2303d88d4db79072562f0b8cc87ec1667dedff99dc1",
+                "sha256:4e2b34e4c0ddfeddf770d7df93e269700b080a4d2ec514fec668d71895f56782",
+                "sha256:5cacf21b6f813c239f100ef78a4132056f93a5940219ec25d2ef833cbeb05588",
+                "sha256:61f58e9ecb9e4dc7e30be56b562f8fc10ae3addcfcef51b588eed10a5a66100d",
+                "sha256:8954ff6e47247bdd134db602fcadfc21662835bd92ce0760f3842eacfeb6e0f3",
+                "sha256:b6e8c854cdc623028e558a409b06ea2f16d13438335941c7765d0a42b5bedd33",
+                "sha256:baca21c0f7344576346e260454d0007313ccca8c170684707a63946b27a56c8f",
+                "sha256:bb1735378770fb95dbe392d29e71405d45c8bdcfa064f916504833a92ab03c55",
+                "sha256:de3d3c46c1ee18f996db42d1eb44cf1565cc9e38fb1dbd9b773ff6b3fa8035d7",
+                "sha256:dee885602bb200bdcb1d30f6da6c7bb207360bc786d0a364fe1540dd14af0bab"
+            ],
+            "index": "pypi",
+            "version": "==2.8.2"
+        },
+        "pytz": {
+            "hashes": [
+                "sha256:303879e36b721603cc54604edcac9d20401bdbe31e1e4fdee5b9f98d5d31dfda",
+                "sha256:d747dd3d23d77ef44c6a3526e274af6efeb0a6f1afd5a69ba4d5be4098c8e141"
+            ],
+            "version": "==2019.1"
+        },
+        "sqlparse": {
+            "hashes": [
+                "sha256:40afe6b8d4b1117e7dff5504d7a8ce07d9a1b15aeeade8a2d10f130a834f8177",
+                "sha256:7c3dca29c022744e95b547e867cee89f4fce4373f3549ccd8797d8eb52cdb873"
+            ],
+            "version": "==0.3.0"
+        }
+    },
+    "develop": {}
+}