Merge branch 'master' into patch-1

.travis.yml

@@ -10,8 +10,7 @@ python:
 
 # command to install dependencies
 install:
-  - "pip install -r requirements.txt"
-  - "pip install -r test-requirements.txt"
+  - "pip install -r requirements-dev.txt"
   - "pip install coveralls"
 
 # command to run tests

README.md

@@ -48,11 +48,11 @@ Documentation:
 Development and Testing:
 ------------------------
 
-Dependencies for developing and testing pcb-tools are listed in test-requirements.txt. Use of a virtual environment is strongly recommended.
+Dependencies for developing and testing pcb-tools are listed in requirements-dev.txt. Use of a virtual environment is strongly recommended.
 
     $ virtualenv venv
     $ source venv/bin/activate
-    (venv)$ pip install -r test-requirements.txt
+    (venv)$ pip install -r requirements-dev.txt
     (venv)$ pip install -e .
 
 We use nose to run pcb-tools's suite of unittests and doctests.

doc-requirements.txt

@@ -1,4 +0,0 @@
-# Doc requirements
-Sphinx==1.2.3
-numpydoc==0.5
-

gerber/excellon_statements.py

@@ -23,6 +23,7 @@ Excellon Statements
 
 import re
 import uuid
+import itertools
 from .utils import (parse_gerber_value, write_gerber_value, decimal_string,
                     inch, metric)
 
@@ -151,8 +152,7 @@ class ExcellonTool(ExcellonStatement):
         tool : Tool
             An ExcellonTool representing the tool defined in `line`
         """
-        commands = re.split('([BCFHSTZ])', line)[1:]
-        commands = [(command, value) for command, value in pairwise(commands)]
+        commands = pairwise(re.split('([BCFHSTZ])', line)[1:])
         args = {}
         args['id'] = id
         nformat = settings.format
@@ -973,6 +973,7 @@ def pairwise(iterator):
 
     e.g. [1, 2, 3, 4, 5, 6] ==> [(1, 2), (3, 4), (5, 6)]
     """
-    itr = iter(iterator)
-    while True:
-        yield tuple([next(itr) for i in range(2)])
+    a, b = itertools.tee(iterator)
+    itr = zip(itertools.islice(a, 0, None, 2), itertools.islice(b, 1, None, 2))
+    for elem in itr:
+        yield elem

gerber/utils.py

@@ -123,6 +123,10 @@ def write_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
     value : string
         The specified value as a Gerber/Excellon-formatted string.
     """
+    
+    if format[0] == float:
+        return "%f" %value
+    
     # Format precision
     integer_digits, decimal_digits = format
     MAX_DIGITS = integer_digits + decimal_digits

requirements-dev.txt

@@ -0,0 +1,5 @@
+# install base requirements
+-r requirements.txt
+
+coverage==4.5.4
+nose==1.3.7

requirements-docs.txt

@@ -0,0 +1,6 @@
+# install base requirements
+-r requirements.txt
+
+# documentation generation support
+Sphinx==1.2.3
+numpydoc==0.5

requirements.txt

@@ -1,2 +1,2 @@
-## The following requirements were added by pip --freeze:
+# cairo rendering support
 cairocffi==0.6

test-requirements.txt

@@ -1,4 +0,0 @@
-# Test requirements
-cairocffi==0.6
-coverage==3.7.1
-nose==1.3.4