+ added simple contacts section which list public keys of gpg ring

templates/wallets/base.html

@@ -13,6 +13,7 @@
     <div class="list-group" style="background-color: #f7f5fa;">
       <a id="new" href="{{ url_for('new_wallet') }}" class="list-group-item"><i class="glyphicon glyphicon-plus-sign"></i> New</a>
       <a id="list" href="{{ url_for('wallets') }}" class="list-group-item"><i class="glyphicon glyphicon-credit-card"></i> Wallets</a>
+      <a id="contacts" href="{{ url_for('wallet_contacts') }}" class="list-group-item"><i class="glyphicon glyphicon-user"></i> Contacts</a>
     </div>
 
     {% if key -%}
@@ -40,6 +41,7 @@
           '/': 'list',
           '{{ url_for('new_wallet') }}': 'new',
           '{{ url_for('wallets') }}': 'list',
+          '{{ url_for('wallet_contacts') }}': 'contacts',
 
 	  {% if key -%}
             '{{ url_for('wallet_history', pgp_fingerprint=key.fingerprint) }}': 'history',

templates/wallets/contacts.html

+{% extends "wallets/base.html" %}
+
+{% block sub_content %}
+<h1><span class="label label-default">Contacts</span></h1>
+
+<div class="list-group">
+  {% for fp,k in settings.public_keys.items() %}
+    <a href="#" class="list-group-item {% if k.keyid == settings.keyid %}active{% endif %}">
+      <h4 class="list-group-item-heading">{{k.uids.0}}</h4>
+      <p class="list-group-item-text">{{fp}}</p>
+    </a>
+  {% endfor %}
+</div>
+
+{% endblock %}

webclient.py

@@ -30,7 +30,6 @@ from flask import\
     flash
 from io import StringIO
 from werkzeug.contrib.cache import SimpleCache
-from itertools import combinations, chain
 
 logger = logging.getLogger("cli")
 app = Flask(__name__)
@@ -233,27 +232,6 @@ Comment:
 
     return False
 
-def powerset(iterable):
-    xs = list(iterable)
-    return chain.from_iterable( combinations(xs,n) for n in range(len(xs)+1) )
-
-def powerset_bis(iterable, low=0, step=1):
-    xs = list(iterable)
-
-    combins = []
-    sums = []
-    for n in range(low, len(xs)+1, step):
-        for c in combinations(xs,n):
-            __sum = sum(c)
-            if __sum not in sums:
-                combins.append(c)
-                sums.append(__sum)
-
-    res = list(zip(sums, combins))
-    res.sort()
-    return res
-    # return sums, combins
-
 @app.route('/wallets/<pgp_fingerprint>/transfer', methods=['GET', 'POST'])
 def wallet_transfer(pgp_fingerprint):
     balance, __clist = clist(pgp_fingerprint)
@@ -310,6 +288,11 @@ def wallet_public_keys():
         v['name'] = v['uids'][0]
     return json.dumps(list(keys.values()))
 
+@app.route('/wallets/contacts')
+def wallet_contacts():
+    return render_template('wallets/contacts.html',
+                           settings=ucoin.settings)
+
 def issue(pgp_fingerprint, amendment, coins, message=''):
     try:
         last_tx = ucoin.hdc.transactions.sender.Last(pgp_fingerprint).get()
@@ -379,6 +362,7 @@ Comment:
 def compute_dividend_remainders(pgp_fingerprint):
     remainders = {}
     for am in ucoin.hdc.amendments.List().get():
+        if not am['dividend']: continue
         if not am['dividend']: continue
         dividend_sum = 0
         for x in ucoin.hdc.transactions.sender.issuance.Dividend(pgp_fingerprint, am['number']).get():