Move to more flexible and faster parser based on python AST

1 files changed, 42 insertions, 0 deletions

diff --git a/constants.py b/constants.py
new file mode 100644
index 0000000..f071ab3
--- /dev/null
+++ b/constants.py
@@ -0,0 +1,42 @@
+# constants.py, constants available in Calculate,
+# by Reinier Heeres <reinier@heeres.eu>
+# Most of these come from Wikipedia.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import math as _math
+
+pi = _math.pi        # 3.1415926535
+e = _math.exp(1)     # 2.7182818284590451
+
+class math:
+    golden_ratio = 1.61803398874989484820458683436563811
+
+class physics:
+    c = 299792458               # Speed of light (in vacuum)
+    h = 6.6260689633e-34        # Planck's constant
+    hbar = 1.05457162853e-34    # Dirac's constant
+    mu0 = 4e-7 * pi             # Magnetic permeability of vacuum
+    e0 = 8.854187817e-12        # Electric permeability of vacuum
+
+    Na = 6.022141510e23         # Avogadro's number
+    kb = 1.380650524e-23        # Boltmann's constant
+    R = 8.31447215              # Gas constant
+
+    c_e = -1.60217648740e-19    # Electron charge
+    m_e = 9.109382616e-31       # Electron mass
+    m_p = 1.6726217129e-27      # Proton mass
+    m_n = 1.6749272928e-27      # Neutron mass
+